It is good that you don't smoke and drink,but there are many other causes of fatty liver
and liver dysfunction,you seems to be over weight so you should visit a Doctor after that physical examination will decide what investigations are required so as to know the cause of your breathing problem and high liver enzymes level. It would be unethical to demand treatment in such forum.
Along with routine test , Liver function test and pulmonary function test may be X ray
chest and a Sonography
of abdomen will give answer.
Healthy diet and exercise is always good for health.
After evaluation of results proper treatment can be formulated and you will be alright
Take care of your health