How can I address with my family that I am the failure the family?

Hi! I'm a 27 year old (F) that is coming to terms about being the disappointment and failure of my family but I don't know how to continue my relationship with them out of shame.To give some context, I am the youngest kid of my mother (71) and father (76), being a menopause baby. I have 4 siblings (51M, 50F, 49F and 40M), all of them with jobs, families and lives of their own.My family always thought I was going to be the family's pride, being born when my family had financial success and when my parents could only concentrate on me as my sibling were already in their 20's except my brother who is 13 years older than me. I went to expensive and prestigious private school when my siblings went to rural schools and they were convinced I was gonna succeed in life given the education, support and resources I was given.Sadly, from the start, thing didn't seem to go that way. I had to do kinder twice because even as a 5-6 year old I was too immature for first grade. I could never concentrate at class, was terrified of studying, got diagnosed with depression at age 7, couldn't socialize properly, had bad grades, etc. The only praise I got from school was being a cute and polite kid that made the teachers like me. But as I growing older and the cute factor began fading, the school and classmates began losing interest in me and began to see my as dead weight. I was required to be left behind another year when almost at senior year, left my school and went to a 2 years in 1 school so I didn't stay behind so much. I did my university entrance test and failed miserably and went to a bad university for two years before twitching to an okay university.I have been 8 years trying to go through my 5 year career degree and, even though I finished my classes and have already worked in my field with positive reviews, I can't finished it and have already gotten on the bad side of my teachers because my lack of commitment. I decided to abandon university.So at 27 I still depend on my parents, have no degree, no job, no friends, can't date, basically I'm completely and utterly useless and a disgrace to my family even though they never said it and always have loved and support me. I have tried everything to get better: psychologist, psychiatrist, neurological reprogramming, hypnotism, holistic therapy, etc. Nothing works.Now I don't want to have a relationship with my family because of the shame I feel. I don't want my parents, siblings, nephews and nieces to see me, to what an useless leech I am, I want to go away with the money I got from my dad making his heritage on live, and rot away till I die.But how can I make it least painful for them? To let them know it was not their fault, that they did everything they could to carry my weight but they deserve a break from me, to leave their lives without the shadow of my failures. I want my parents to be freed from me, to see their children and grandchild as a good thing without me as dark spot in their spotless record.I really sometimes wish I hadn't being born in such a wonderful family and full of privilege I don't deserve. I need to go away but don't know how not breaks my parents heart. via /r/relationship_advice https://ift.tt/33MCcq8