How to do things on my own?

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I have just found an old friend on facebook i havent seen in 10 yrs I am afraid to go out on my own because of the bullies that live next door. I want to change my life now but I have always been scared of new things even people I havent seen in ages how do I not worry about all the things that could go wrong and think positve? I wouldnt know what to say to her my old friend I am 28 and the same with her I dont know how to overcome being nervous with change I am a dissability pensioner and have no friends only i live with my mum and 3 dogs. I have trouble making new friends because i'm frightened they may turn out to be a bully too?

How to do things on my own?