Most of us are in constant search of a companion, who will be there with us at all times. We fail to realize that, we don't meet such a person in real life. All our teenage life goes by, with us hating ourselves for not meeting the standards set by society. By the time we realize that other's opinions do not matter, it would have been too late.
That doesn't mean you have to completely isolate yourself from others and be alone. But inculcate the habit of talking to yourself every day. Understand your thoughts and what they actually mean. You can also maintain a journal and write it down.
Everyone has a different mind and everyone processes things differently. So expecting to make everyone happy is not possible. You have to understand that other's happiness is not your responsibility. Putting yourself first is not selfish.
