When u lose someone u depended on

I have been diagnosed with dependent personality disorder for a while. It's been a cycle in my life that i completely depend on one person from my exes till lastly my best friend. I was hopelessly dependent on her and needed to be with her as much as possible and we did spend lots of time together. I went to her for advice on the smallest littlest things she was always there for me. She cared so much for me.

The problem is she always warned me that certain things like drinking or stupid behaviour and she would leave me and never talk to me again. Well, in November I tried to commit suicide and she dropped me just like that. Realizing how dependent I was on her despite being a single mum of a 5 year old I am hurting so so much right now. It's like I'm stabbed in the heart every day every time I think of her and the regret and guilt is horrendous.

So where do I go from here? I'm actively seeking someone else to attach to but to no avail, me and that person has to 'click' for it to function. On the other hand I'm thinking here's a clean new slate and I can start fresh without being so dependent on anyone. My pain is however, that I miss having someone there for me and I'm finding it so hard to cope. On a further note I don't want this to happen again, what if i do find a new friendship that 'clicks' and i become overly attached to again, how do i stop that from happening? I'm very much in too minds, on one hand I desperately want and need someone on the other hand I want to be independent and capable of being on my own without feeling so alone.

Any advice on the subject would be greatly appreciated. Thanks