How to be good and different time controls.
Start playing "Solitaire Chess." Find master games in lines you play. Grab the PGN and turn off notation. Go 10 moves into the game and then try to find the best plan. Give yourself 5 minutes for every move and try to match the GM. This will simulate playing a real game and you can just stop if you need to. Instead of playing a blitz game (or 10) just try to find 3 or 4 moves, or if you have enough time, 10. I wouldn't suggest more than an hour at first, because you're likely to get bored and not pick the best moves.