I am reading a book on Self Hypnosis...?

Ok I am 14 and I am interested in Psychology, Sociology, and other similar things. I like to better understand the mind. I don't know why but I have a hard time understanding myself and I would like to better understand myself. I am thinking that since I have done alot of research and reading about all these subjects it would help. I just bought a book at a garage sale called "Self Hypnosis Its theory Technique and Appicatoin" by Melvin Powers Copyrighted in 1956. I know it is an old book but do you think it could help me? I have a weird mind and I am often depressed and suicidal and I worry alot and am very indecisive also my counsciounce worries me alot. Do you think it could help me? Also do you think it is odd that a 14 year old is interested in all this? By the way I have this thing where I can tell what people are thinking and read their emotions even when they are half way across the country (I did it last night I shocked myself) and well it only works with certain people I know. Not everyone. Mostly the people who have opened up to me and are close to me although I have done it to complete strangers too. Please help. Thanks.