Application is hard

How to apply what I have been learning has been quite difficult.  I am afraid that I could get worse health-wise.  I am overweight and diabetic.  Despite being on Weight Watchers, I could use some help and I could use some support.  Applying what I have learned is very hard to do and it is quite daunting.  I eat too much of the bad stuff and not enough of the good.  I know what to eat, but knowing how to eat and when to eat is very hard to do.  I need wisdom on how to eat.  I need guidance.  I need help.