Philippians 4:13 I can do all things through Christ which strengtheneth me.

Philippians 4:19 But my God shall supply all your need according to his riches in glory by Christ Jesus.

The man who wrote these 2 Scriptures, also wrote this:

2 Corinthians 7:5 For, when we were come into Macedonia, our flesh had no rest, but we were troubled on every side; without were fightings, within were fears.
2co 7:6 Nevertheless God, that comforteth those that are cast down, comforted us by the coming of Titus.

Amplified: 5 For even when we arrived in Macedonia, our bodies had no ease or rest, but we were oppressed in every way and afflicted at every turn--fighting and contentions without, dread and fears within [us].
6 But God, Who comforts and encourages and refreshes and cheers the depressed and the sinking, comforted and encouraged and refreshed and cheered us by the arrival of Titus.

I think this makes it clear that we all, at some point, have to deal with fear and anxiety.
Every one of us is a combination of strengths and weaknesses, good points and bad points. There's a sense in which we're all, at times, walking contradictions, because we often believe one thing and do another.

In my case, I'm a preacher who believes what the Bible says about the peace of God that passes understanding, yet I sometimes struggle with anxiety.

Here in 2 Corinthians, Paul admits the same was true for him. The same man who wrote Philippians 4 about the peace of God also wrote 2 Corinthians 7 about his own fears and phobias saying, "When we came into Macedonia, this body of ours had no rest, but we were harassed at every turn - conflicts on the outside, fears within."

Now listen to this Scripture:
James 5:17 Elias was a man subject to like passions as we are, [with feelings, affections, and a constitution like ours]; and he prayed earnestly that it might not rain: and it rained not on the earth by the space of three years and six months.

Now in the 19th chapter of 1 Kings we can read how Jezebel sent a messenger unto Elijah, saying that she was going to kill him and he ran for his life. He ran a day's journey into the wilderness, sat down under a tree and said: "Lord, I have had enough, just kill me." Now he didn't mean that or he could have just waited for Jezebel.

The point I want to make is: Many Christians, even men like Paul and Elijah, are acquainted with anxiety. And if it is not dealt with, it can turn into full-blown desperation and Satan will use it to take control of the situation. But it’s up to you whether or not you give in to these emotions.
In order to come out victoriously, you must refuse anxiety and fear.

Even though men like Paul, Elijah and others experienced it, the Bible is against it.

God is against worry. It does not produce anything but stress, strain, and death. Jesus preached against it. Paul, while he admits he has experienced it, preached against it.

Philippians 4:6 Be careful for nothing; but in every thing by prayer and supplication with thanksgiving let your requests be made known unto God.
Php 4:7 And the peace of God, which passeth all understanding, shall keep your hearts and minds through Christ Jesus.
The Amplified Bible says, “Do not fret or have any anxiety about anything.”

I Peter 5:6-7 says: Humble yourselves therefore under the mighty hand of God, that he may exalt you in due time:
1pe 5:7 Casting all your care upon him; for he careth for you.

ALL YOUR CARE! Not 75% of your care. Not everything but your kids or everything but your finances.

Many people want God to supernaturally remove their worry. But that’s not the way to get the peace of God. God’s peace comes by acting on His Word that says to cast all of your worry and anxiety over on Him.

Now I want to tell you something that I believe The Lord showed me. You can do what you want with this.
​When you pull the worry and anxiety out of your spirit it leaves a hole that must be filled. You must replace those thoughts with the Word.

Philippians 4:8 says to think on “whatsoever things are true…honest…just…lovely...of good report; if there be any virtue, and if there be any praise, think on these things.”

You are going to have to do something. You must keep your thoughts under control.

II Corinthians 10:5 says, Casting down imaginations, and every high thing that exalteth itself against the knowledge of God, and bringing into captivity every thought to the obedience of Christ.

The enemy will tell you that you can’t quit worrying, but you can. God would not tell you to do something that He would not enable you to do.

The verse before that says the weapons of our warfare are not carnal, but mighty (powerful) through God to the pulling down of strongholds. (II Corinthians 10:4)

If we don't come against it, worry can build up a stronghold in our lives and torment us day and night and rob us of joy and just plain wear us down.
The power of God begins to operate in our circumstances and problems when we cast our care over on Him. As long as you worry about it, you only hinder the flow of His power. Worry gets in the way.

Mark 4:19 And the cares of this world, and the deceitfulness of riches, and the lusts of other things entering in, choke the word, and it becometh unfruitful.

Don't let worry choke out the Word in you. Use God's Word to choke out worry.