There's only one rule you need to remember: laugh at everything and foget everybody else! It sound egotistical, but it's actually the only cure for those suffering from self-pity.
When we fall in love, we hope - both egotistically and altruistically - that we shall be finally, truly seen: judged and approved. Of course, love does not always bring approval: being seen may just as well lead to a thumbs-down and a season in hell.