Welcome to HCM,
Your liver enzymes are elevated AST,ALT, and GGT, they indicate injury to liver but GGT in isolation points to alcoholic induced damage to liver but in association can increase in other liver injuries, Fatty liver
could be one,Obesity, Cholestasis
due to Stones,liver damage
due to Diabetes.
,drug induced simple drugs like paracetamol
can damage liver significantly.
There are various test to know the cause of liver damage many Imaging like Ultra sonography and CT/MRI scan.
If any obstruction is suspected then ERCP.
Please do not take any alcohol, and try to reduce your weight and investigate properly in consultation with Physician.
If every thing is fine then lose weight and take care of diet and exercise try to keep fit.