I always worry when people put stuff off until they've lost weight, it sounds like they're putting their lives on hold until they are x size, which is doing themselves short.
I've always wanted to get back into horse riding, and I set myself a goal of being below a certain weight before contacting a stables and asking if I can help with mucking out and things (it's good exercise!) so I can be around horses and get my confidence back.
That weight came and went, and a stone under that I contacted one. They were so lovely, friendly and welcoming, that I'm sure I could've contacted them months ago. What a waste of time waiting to be thinner!
I had other stuff put off until I lost more (skiing lessons and kayaking) but that's scrapped now, and I'm just going to do it - and have fun losing weight!