Will Faerie dust do?
Why do you want to lose weight? Seriously. Maybe taking the time to write down the reasons why you're doing this would help.
Many people hit plateaus and stumbles along their way. I don't want this to sound as harsh as it might, but ... what did stopping get you? At the very least when you were continuing you weren't gaining too much. You were maintaining. But... giving up... didn't get you any closer to where you truly want to be, right?
If you're tired of Slimming World, maybe it's time to try something new to give yourself a kickstart. But, remember as you're beginning anew this time around, that this does take commitment. Especially through the tough times.
You can do this! Stick with it, whatever you decide.