[Halp]Best way to remember doing something?

[minebill]

I just got back from the dentist and long story short i must wear my new braces whenever i can or i might end up having to do surgery on my jaw.
It's just that never remember to wear them after eating or coming home from school. I tried using alarm every 3-4 hours but i would disable it sometimes and forgot to enable it again. Maybe you can suggest something?

Thanks.