gotta a lot of thing on my mind

...I have a wall built up to guard my heart and it wont allow me to express my feelings or love someone that I know is good for me. I'm scared of the pain and the heartache it might bring along. I've already been through enough I'm not trying to add more baggage unto my life, so its sad to say but I'll probably be content with living my life alone, but I know that's a lie, because I want someone by my side. But I have to open up first...until then I will be my own person and do what i want, but I'm scared I might miss that opportunity because I have a wall up. So now what I should do from here...break down that wall right?! but the hardest part is start...