How can I prevent jealousy?

if anyone could help me
im wondering if you have any tips or anything to stop being jealous about things with you boyfriend
I know that I may be a little insecure but is there something else I could do to stop being jealous? or is it just me?

I am also jealous when it comes to a guy I am dating. I am a constant worrier! Here's some things to think about:
-How would you feel if he was jealous about things with you? Would it get on your nerves after a while?
- Has he given you any reason to NOT trust him? Any reason to BE jealous?
- What causes the jealousy? Is it the way you feel about yourself? Perhaps you should work on being comfortable with who you are, not on who you aren't.

I don't know what your situation with him is..What I have realized is that guys are only confusing to me because I confuse myself. I worry about things and get jealous over nothing. My main reason for being jealous (like if he has friends that are girls) is due to the fact that I do not like my appearance and I do not find myself attractive. However, if he didn't find me attractive and fun to be with, then he would not be spending time with me or dating me. Remember: It is IMPOSSIBLE to change someone. I hope this helps. I know it's difficult to stop yourself from being jealous, but it's better to not let him see that you are jealous because it puts stress on your relationship.