Similar boat: started working out with a trainer in Feb 2x a week, and 2x on my own. Although having a trainer is a luxury the return has been great and I've never felt better.
That's probably one of the 2 improvements in my lifestyle caused by moving from Paris to SF. The other would be that I can walk to work in 25 minutes, although my commute was just as short in Paris, except in the subway.
At the same time, it is a great investment for that overinflated tech salary so I don't regret paying 70$/hour for this service.
YMMV, a trainer has allowed me to fix goals and get tailored exercises so I progress quickly.
I repeat the exercises I did with the trainers the other days of the week.
Since I am not a morning person, I go to the gym in the evening, so I often go there , have a shower and go to sleep.
It has tremendously improved both my sleep and my energy levels.