&quot;especially with other Men&quot;, &quot;I feel insecure that she really likes me&quot;<p>This is the problem. You don&#x27;t have confidence in yourself. You care too much about what others think of you.<p>To become a powerful man, stop worrying about what others think of you. I mean really stop worrying. Do what you have to do for YOURSELF.<p>Self defense class is a good idea. It might boost your physical and mental strength. Working out is also a good idea. Go do some chores around the house&#x2F;apartment as well on a regular basis. For some weird reason, whenever I mow my lawn, I feel great and manly :)<p>Most importantly, believe in yourself. Tell yourself that YOU matter not just to others, but yourself. Love yourself. Be selfish. If others don&#x27;t like you for who you are, then ignore them. Remember, be nice to people but don&#x27;t be a doormat. If you believe in something, then stick to it (well unless it is illegal of course).<p>Read &quot;The Virtue of Selfishness&quot; by Ayn Rand.