Help please! How to get over someone I'm constantly thinking about?

refocus your mind on something else, family, friends, shows, or even other amor interests.

best conselhos is this, play some video games, watch some TV, Hang out with friends, do any task that requires your attention.

keep yourself distracted and your mind will eventually find something new to preoccupy itself with.

listen to me very carefully.

you have to do every thing i say.

it will help you.

go to your kitchen.

get a bowl of somesort, and a damp towel.

go to the bathroom.

stare at yourself and everytime you thing of that person just soco yourself, as hard as you can.

and you wont want to think of him.

and if you start to bleed you can apply to the damp towel, and the bowl is for if you ever need to throw up.

youre welcome.

Do something fun! Watch awesome filmes (like Micheal Bay's transformers or The Avengers), watch a happy animê (like Dragon Ball Z or Fairy Tail), or collect toys.

Hang out with other people

I'd suggest you should put your mind at ease and just do something to get your mind off him. For example, you could take up a hobby, such as composição literária a story, watching movies, hanging out with your friends and family, etc. Or, what you need to do is just think about the other things that keep both your mind and dia going. These are just my suggestions and I understand if they are stupid and not helpful. :P But I wish you luck.