How do I stop myself from texting him?

Realize that you need time to sort yourself out and that time shall be spent wisely. It can be hard at times but it is never impossible. Start small. Try keeping your phone out of your reach whenever you have the sudden urge to text him. Distract yourself for a while. Curl up in your favorite arm chair/sofa/bed with a book or a drawing pad. Or just with an iPod. Listen to music. Drink your favorite tea/coffee. Make sure that you treat yourself. Among all this, you'll feel a wee bit better about yourself, about what you're doing and it will serve to distract you from that sudden impulse of texting him. You'll be able to engage yourself in something much more healthier. Reading, of course, helps. It dunks you in a different world where your problems ease up.

delete his number, cause if its not there you cant text, block him off social media anything like that make sure you have no number written down if you do rip them up, hard at first but it really helps and makes it harder for you at the time when you brake down and feel the urge to text him. WILL POWER

Engage yourself in the activities you enjoy doing and think about what are the things you like, talk to someone.

Distract yourself with other activities you enjoy! If you don't have a hobby yet, find one :) This is the perfect time to focus on yourself and explore what interests you could have. Try to focus on something that is constructive and has a goal you can finish. Exercise is excellent in this respect, with the added bonus that it releases endorphins and can make you tired.

Distract yourself with your hobbies. Doing things you love keeps your mind occupied and helps you not to get hurt. Spend time with family, do work, think about all the negative things that could happen if you did text him. Think about what's going to be best for you, and do that.

First of all, put your phone away. If you can take it any time you won't be able to stop. If you already did that think about something diffrent that won't make you think about him.

Ask your friend to delete his number (so that you wont have time to memorize it) or putting the phone somewhere you cant reach everytime you had tge urge to text.

delete his contact,delete his pictures,delete him or block him from all your social medias

See some friends. Make yourself be busy so that you are not constantly thinking about texting him. :-)

Stay away from your phone and look for something to do. Take long showers, go for a drive, watch a movie, hang out with your friends, go for a jog. Try to not think of him.