ghosts!!!!!!!!

When I was young I used to say to my parents that whenever I used to cry or sad at night I used to see a figure of light on the wall next to our previous house. I used to smile and be happy whenever I see this light of figure when I was young. I don't know its my mind played trick when I was sad or if I really saw the figure of light, but one thing I know whenever I am along I feel someone is standing besides me to make me stronger. Sometimes I get an intuation or like someone telling me to trust this person or to make the correct decision etc. Sometimes I feel like motivatd by voice from inner mind. I think its my guardian angel taking care of me. Now about ghost. One time me and my friend was standing in the terrace of a flat. Suddenly we saw some sitting in the top roof of the flat. There was less light. We could see someone sitting and moving his body. We first thought it was someone sitting, but we learned that there is no steps to get ont the roof top and the roof top was sheet and if anyone get into it there would be lots of noise, but none was heard. Still me and my friend doesn't know if its a person or something else.