<human>: Having ruined my two previous relationships because of these issues I had settled adamantly in the idea that I was going to be alone for at least the next few years to work on being comfortable with myself and to get myself able to have more healthy relationships in the future. 

I've already made a lot of progress in that, but over the winter I met a man, and whilst he knows about these things and we are taking things slow I came here to ask how I could get over insecurity and fear of vulnerability so that I could be in a relationship with him. After writing out the question I realised that I am not ready for this relationship and deleted it so that I could instead ask what I can do by myself to get to a point where I can have healthy relationships. 

In past relationships I was obsessively concerned with making them happy which led me to both repress my own needs and to feel that I could never be good enough for them (not perfect = big insecurity.) I am terrified that expressing my negative emotions will make them unhappy, but not expressing them makes them multiply until I'm so overwhelmed I can't handle their or my own emotions and end up making us both unhappy.

The past two years I've worked a lot on understanding my worth and the importance of expressing and dealing with my emotions instead of repressing them. However when I become close to a man I find myself fighting the old thoughts that whatever I do I must make him happy and not cause him pain, so far that my only worth is in the things I can do for him and when I inevitably cannot do so perfectly I feel absolutely inadequate.

Writing this out I am pretty surprised and embarrassed by the way I relate to men and this is not the person I want to be. At it's least this tendency is self-defeating, where in trying to be good enough for the person I love I become someone neurotic and incapable of showing vulnerability and not a good partner at all. At it's worst it destroys any sense I have of myself and my worth and I simply can not live like that even if it means living alone.

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: How can I relate healthily instead of obsessing about making a man happy and whether I'm good enough to do so?