WELCOME...and congrats on your wedding. I'm still on this journey but a few thoughts:
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1) Find a plan you can live with and not just lose weight quickly on.
2) Find an exercise routine that keeps you engaged. It will help.
3) Don't let a momentary slip stop you. There will be bumps and weak moments...and if you're like me, times when you absolutely fail. Keep going. If you do nothing, there's 100% chance that nothing will change or things will get worse. If you keep pushing forward, at least you'll have a chance,

3) Remember, one day at a time, one meal at a time, one pound at a time!
Cheering you on to goal