How can I stop thinking about him/her? Why my heart hurts so much?

Sometimes it's not easy to forget him/her. Based in my personal experience, what you should do is: -Avoid going to places where you used to go with him/her. -Try not to be alone. Meet your friends! -Distract yourself with activities that you enjoy.

Focus on yourself my dear don't be so hard on yourself, remember you have family who also loves you and a friends who also comfort you

Take a 90-second time out. To free your mind, you first have to break your thought pattern. Neuropsychiatrist Dan Siegel says, “After 90 seconds an emotion will arise and fall like a wave on the shore.” It only takes 90 seconds to shift out of a mood state, including anger. Give yourself 90 seconds—about 15 deep in and out breaths—to not think about that person or situation. You’ve broken that thought cycle—and the hold your thoughts had on you.

Do something to distract yourself. Stay busy with work or going out with friends, doing a Hobby... Your heart may hurt because they hurt you a lot. So as I said the best thing against the constant thinking is keeping yourself busy.

I know exacly how you feel I was in a similar situation before after my breakup. What I did to stop thinking about them was comeplety get them out of you life try to delete all contact with them and then try to do something that makes you happy to get your mind off them

Oh i get it, it happens so frequent and nothing feels right ?, Well, Engage yourself in some social activities, go out and don't spend alone time with yourself, spend time with people whom you have not met in a while or your friends, or make some new friends

do things that you enjoy and do not remind you of him/her. Take some time everyday to relax and treat yourself even if that is listening to a throwback playlist, thinking about what you are thankful for, pampering yourself -washing yourself and keeping your hygiene up will boost your mood- you could get active and take up a new sport or even writing your feelings and thoughts on to paper and then shredding your bad feelings and thoughts.

The only way to cure a broken heart is time. Time is essential in that ecuation and only time can heal those wounds. Letting go is not easy but in time you will realise that in didn't work out for a reason and your mind will be at ease.

Find things to do, places to visit. You should always try to see a doctor for any heart issues.

Judging by my own personal experiences I know it can be hard to forget a loved one but you have to start asking yourself how much of what you think about this person is true and how much of it you just wish it was true because of how you feel; is okay to allowed yourself to love but you must always love yourself first and understand that if that person is not part of your life anymore is because you deserve better. Allow yourself to be loved.