I don't really vibe with Paul when he says that he has learned to be content in a bunch of different circumstances.  

2 Corintians 1:8 says:  We do not want you to be uninformed, brothers and sisters,^[a] about the troubles we experienced in the province of Asia. We were under great pressure, far beyond our ability to endure, so that we despaired of life itself.

You may be in a spot where you are frustrated and exasperated feels like it was months ago and life just kept on going.  Understand if you keep the faith and keep on are being changed.

If you turn back, deny the faith, do regretful things you will be changed as well.

Life is hard.  It's hard to eat healthy and workout.  It's hard to be unhealthy.  It's hard to be diligent and it's hard to get the results of not.  It's hard to live a life worthy of Christ but it's also going to be very hard in the end if you don't.  You get to choose your hard.

You may feel that you are well beyond your capacity but press on; seek his strength.

Remember when God told the Hebrews that he brought them to himself on eagles wings.  They had come through several very stress filled experiences and were without water in a desert and several other trials.  God has a perspective that I don't.  He has expectations that seem far and above what my senses say is reasonable but...He is the one that sets the bar and He is the one that created life.

We can surely go far beyond what we feel we can.

It's imperative that we seek his direction and seek power to live the good life and carry out the good fight.  There is only one way that we hear "Well done good and faithful servant" and that requires that we are good and faithful servants.