Dark Raven's right Tony Problems are interpersonal. Tony has to live up to the reputation of his fathers achievements. He will most likely carry the emotional baggage around with him throughout the movie. It also doesn't help that the guy that worked with his father (Steve Rogers) doesn't even think that he's half the man his father was. Which leads to Tony drinking problem.
Tony's is more self destructive than any one else in the group. He tend to adopt behaviors and engage in activity that are non-beneficial and could possibly endanger his life.
Death wish
I think this answers that question.
Death Wish
n.
1. Psychiatry
a. A desire for self-destruction, often accompanied by feelings of depression, hopelessness, and self-reproach.
b. The desire, often unconscious, for the death of another person, such as a parent, toward whom one has unconscious hostility.
2.
A suicidal urge thought to drive certain people to put themselves consistently into dangerous situations.
It also leads to substance abuse. Alcoholism