Blas, it's a condition you have to live with, try to avoid stressful situations, and things that involve physical effort, gentle excercise is the order of the day.
If you feel tired, then go and have a rest, don't force yourself to do things if you don't feel comfortable.
Take the medication as prescribed at the correct times, (I am very fortunate in that my wife was a trained nurse, she administers all my tablets at the correct time)
Just take it easy Blas, if you wish to converse off line, to ask any questions you like, then I will be happy to give any help I can.
Wotan