First, be yourself. No one will ever truly love you if they do not know who you really are.
Second, let the others be themselves. Do not be so judgmental or try to change people. After all, if you liked someone from the beginning, why try to alter them later?
Third and last, love them first. Be open, allowing yourself to love, believe in and support. By doing so, people will recognize how willing to love you are and they in turn will more than likely offer their love in return.