Have u tried mediation? Only serious answers please(wiccan/pagan followers preffer but any helpful hints r ok)?

I have tried mediation before many times but I get no where I tend to get scared and then can't focus again. I get this feeling that something is watching me and I don't sense like its good it frightens me actually. I have tried too get over it but I can't . Can any one tell me what I can so do not get scared. I don't need to be told that it's something stupid our that I'm going to hell for not believing jesus or god. I just want someone that had been there done that. Or that ones someone that can help me. I haver started a magickal path and it feels right for me the only thing its that I'm scared of what I can do. Please help. I found wicca during high school but stopped for the same reason, I got scared, then I about two years ago the same thing happen and I figured it's meant for me. So started to read research and what not point us that when I get to the point that I want to make a ritual or enhance my powers I get scared. Like something is there. And I can't sence if it's good or bad energy and the fact that I don't know scares me. Please help me. Any suggestions are greatly appreciated... I'm willing to say why I am scared if using my powers but I'm private....