Guadalupe,
You certainly have some very real non-weight motivation here. Just watch out, as serious health issues and pressure from doctors can leave you feeling like you don’t have freedom of choice any more. There’s a video about exactly that: 5.4 Advice and Choice – so take a look, especially if you feel deprived or rebellious.
You seem to understand the issues (from this course) very well. Remember the motivation theme is a matter of balance; so “without thinking on my weight” isn’t the idea as much as “when I think about my weight I remember the non-weight benefits too.” Yes?