How to stick to your goals?

Take things that are relevant to your goals.
Discard those that are not relevant to your goals.
Not related to your goal, maybe your loved ones (relatives, friends, someone close to the family) may be your favorite things (sports, watching TV, reading magazines) but if not related to the goal then exclude them. must continue

Otherwise they will annoy you again and again and prevent you from reaching your goals which will not be unbreakable.
A famous bollywood movie "Dangal" where Geeta and Babita are practicing wrestling as a child and their hair becomes a problem, her father Aamir Khan decides to cut his daughters hair and he shows it by doing it and says that to achieve my daughter's goal all that Things will get in the way, I will remove them all.
Also Aamir Khan has worked on many other things how to keep them engaged with the target.

So to keep the goal intact, first of all you need to learn to like, learn to like all the things that are related to the goal and hold on to them well then your goal will remain intact.