“ You can use this mind either to create wellbeing or misery for yourself. Everyone has this choice. ”
You never know how strong you are, until being strong is your only choice.
Your problem is just this - your body and your mind are not taking instructions from you, that's all.
Do you want to rule the world or do you want to serve the world? Ultimately, that is the choice.
If you choose, you can be joyful every moment of your life. It's time you made your choice.