I never stick with the same thing for longer than a month or 6 weeks. I change what I eat every week and my exercise changes a few times too. I find stuff to stick with, but I look for new stuff and new things to learn constantly or I get bored. It prevents me from seeing this all as one long big 'rut' because every week I feel like I started anew.
That gets annoyign too though, because itmakes me forget where I've been and come from and if I don't stay on a new plan for a week I feel like a failure. But I'm just saying: keep moving if you don't like standing still. And I don't mean on the lbs lost, but on the stuff you do to lose them.
Though changing up what works might be scary too?
Goodluck! And don't give up! But also don't make it feel like a chore, because maintenance is just around the corner of those 17.5lbs and it's not gonna be any more 'fun' than this. So make this fun!