When you think about going to guitar lessons, what makes you not want to go?
I have a stop & start mentality with things too. I've realized that for myself, I'll commit to things when I'm manic & then when it comes time to step up to the plate, if I'm depressed or my anxiety kicks in I'll end up backing out 9 times out of 10. If it's a more personal thing (learning a new language, writing, etc), sometimes the idea of how daunting it is to just start makes me freeze. Instead of seeing the task as 1 thing: learn to play guitar, I'll see it as a list of things that seems insurmountable: shower & get out of the house, lug guitar into music store, sit in front of instructor and get anxiety about if he'll notice the zit on my forehead, curl clumsy hand into G-chord, struggle to read tablature, practice what I've learned, get anxiety about progress, etc... This is something I'm still learning how to overcome, but just thought I'd throw it out there because I think sometimes it's not a lack of motivation but a thought process that can cause action (or lack thereof).
If lessons are difficult to commit to now for you, there are some great YouTube videos on basics/how to read tablature & a lot of free music available online- that could be a way to start without the commitment? Good luck with the path you choose!