Any kind of rejection, no matter if it's in love, your career, friends, a book proposal or anything else, is not something that should affect how happy you are. Rejection doesn't feel great and sometimes it feels unfathomable but it shouldn't be something you permit to take away happiness from your life. The suffering that happens when rejection occurs comes from over-thinking the "loss" that you feel you're suffering, be it loss of an opportunity, loss of a special relationship or loss of some other kind. The reality of life is that rejection will form a part of it––there will be occasions when your job application, your date request or your ideas for change will be rejected by someone, somewhere. It is a healthy attitude to accept that rejection is a part of life and to acknowledge that what really matters is finding the way to bounce back and try again.
No how to make it done?