I'm in a similar position but figured out how to work out last year. it's not a panacea, but working out is quite fun and is a great skill. I never had a personal trainer, but the best part about having one would probably be that they could set you up with some plans to follow, removing all the initial guesswork. The hardest part about working out for me is trying to figure out a goal to optimize for that's not too far away but not too simple either.