So you've had two jobs each for a decent stint. That's a good start getting experiences at multiple workplaces. But it sounds like you know its time to move again, but make this move with purpose and think about which area you would like to specialise in, something that really excites you. I'm sure with all the reading you've done you have a good general idea.

As with mentors at least in my experience they find you. Maybe your mentor will be in your next job!

Dont worry, I think you're doing well :)