Welcome to HCM
After going through details you have posted,you are Diabetic Type II, Dyslipedimia, Hypertension
,and Gastric problems, see these are interrelated problems and even with so many comorbid condition some depression
is always a possibility.
Medicines are for control of your disease and perfectly OK.
You must take care of diet and regular walking exercise will help.
You can also take up Yoga and meditation
for additional benefit.
Have faith in treating Physician and follow his/her instruction sincerely your heath will improve fast.
If you are overweight
try to loose weight.
Good Luck to you.