Now, when Paul prospered, he still remained level headed. I believe, he never turned his back on his old friends just because he had more than they had. Paul was still the same Paul in time of plenty because of what Christ was doing in his life. When Paul said that he could do all things, he meant things that were right.
God does not strengthen children to rebel against their parents. He will not strengthen someone to have an affair outside marriage. God will also not strengthen someone to squander his money on alcohol or strange women and cause his children at home to suffer lack.
Although Paul says, “all things” it is really not all things. Paul was really talking about doing things that please God. Are you are a child of God? If you are, then you qualified to be strengthen by Jesus Christ as you do things that please God.
The point here is that we all have to be content in whatever circumstance we face. We have to experience some level of satisfaction in Christ so that we can do what we need to do. In all this, we have to make sure we are really children of God. God always strengthens his children. In 1 Timothy 6:6 the Bible says, “But godliness with contentment is great gain” (KJV). Contentment plays a big part in our lives as children of God.
In Christ, there is strength for you to do things that please God.