Struggling with bad habits after being in residential treatment

I was in the psych ward for 2 weeks and then a residential house for 4 weeks. During that time I couldn't do the bad habits I formed beforehand. I was convinced that I was better and had a plan for after treatment.

But 2 days after I relapsed those habits.

I'm medicated and even though I've been consistent with it, I still struggle with impulse triggered by manic and depressive episodes.

I'm trying to get back on track now but all I feel is ashamed for relapsing.