Don't think of a breakup with your loved one as the end of the story - treat it as the beginning of a new chapter.
The following recommendations will help you with this.
Block your partner on social media
Don't open up still-bleeding wounds by looking at happy photos of your ex. The damage will be even more devastating if he decided to take a photo with his new flame and posted the photo for everyone to see.
Take a break
You can do anything you want, just don't lie in bed and cry over your ex: do some repairs, go on a trip with a friend, or find a new hobby for yourself.
Do some sports
Exercise promotes the production of serotonin and endorphins, meaning you'll feel much better after hitting the gym.
Don't rush into new dates
Don't rush to jump into the deep end and go meet a new person the very next day after the breakup. The saying "fight fire with fire" doesn't always work.
Get used to being alone
Get used to your new single status, at least for a while. Don't rush to find company - instead, enjoy being with yourself. Feel like a whole person, not someone's other half.