No you didn't, you were unable to make the better choice (likely because of limited willpower). No mentally healthy person intentionally makes bad choices, that would be self-harm.
I think the more apt phrase is "I lack the discipline".
I do think there is a level of fooling myself when do choose badly, thinking "It'll be fine, no big deal", when down deep I know it will cause a problem.
Mentally healthy people make bad choices all the time, knowing they will pay for it later, but wanting to enjoy "the now".
