I've been there too, seesaw. I've quit one job after two days, and another after 3, and have had a few others for 1 to six months. That was all in my late teens and early twenties but from it I learned that I shouldnt take anything that is offered to me like I was because I basically stay in denial about the position not being a good fit and take the job and it would go south quickly. Definitely not proud of it, as for me it was mostly out of weakness. However, I have stuck through jobs and schools through the long haul that weren't a right fit for me... And the result was much worse on my mental health and self esteem than during those times I did walk away.