Can depression impair my judgement to the point where i could be convinced of doing things i wouldn't normally do?

DEPRESSION: Get an evaluation from a psychiatrist to help identify what depression means to you and whatever else may be bothering you. Consider recommendations for medication if any are given. Get a referral for a reputable psychotherapist to speak with. Meds and therapy combined are most optimal; no just one or the other.

Severe depression.: In rare circumstances, depression can reach a psychotic level at which your insight and judgment are impaired and your ability to make decisions would be thereby compromised. If this is the case with you, then you need immediate psychological help, perhaps even in a hospital setting.