Hi heavy alcohol user 10-15 years, concerned a liver function test shows alt 63 ggt 234 and ast 35(which is think is normal?) very frightened of liver

Enzyme elevations: consistent with alcoholic hepatitis ( inflammation of the liver cells and a possible precursor to cirrhosis.

I'd be worried too: This is not "alcoholic hepatitis" (AST would be >400 usually) but you've probably damaged your liver but most likely it'll repair in a week or two of sobriety. The enzyme elevations do correlate some with fibrosis / long-term scarring which is cirrhosis which is what will kill you. There's also your brain -- heavy stuff makes it harder to be a nice or happy person. Try to quit. Best wishes.