Ab workouts

Years ago when I was a skinny young lad I didn’t need to work out to have a six pack. I was so skinny that I had a six pack naturally! But now that I’m older and put on some weight I have a fat tummy and gone is my six pack. I miss my six pack and I want it back and the only way to get it back is ab workouts which I think will be too hard for a couch potato like me.