If you don’t believe it yourself, don’t ask anyone else to do so.
It is virtually impossible not to transmit your doubts and insecurities to others through body language, tone of voice, inflection, word choice, and other subtle characteristics. When you show threw your actions that you lack self-confidence, other people will doubt your ability to perform. You can gain the respect and confidence of others.
Begin by making a list of all the things you like about yourself and the things you would like to change. Make a conscious effort to build upon your positive strengths and correct your weaknesses. Weak desires bring weak results, just as a small amount of fire makes a small amount of heat. It may not be easy, but if you assess yourself objectively and persevere in your efforts, you will eventually prevail.
A good fisherman goes out of his way to bait his hook with what the fish prefer — which might not be a bad tip for those who wish to succeed in human relationships.
Just as in a conversation it’s a good idea to listen more than you talk, it is also wise in relationships to think about the well-being of others more than you think about your own wishes and desires. When you constantly strive to treat others in the same way you would like them to treat you, you become a person whom others like to be around, one who commands their respect, confidence, and loyalty. When you learn to manage emotions and your ego, and when you learn to always consider the needs and desires of others, it is inevitable that you will “bait your hook” with kindness and consideration, and catch more friends than you can count.