You get stronger day after day thanks to all the things that don’t kill you. You learn from your mistakes, you gain valuable experience and build self-confidence. One day you decide that you are finally strong enough to handle anything life may offer or throw against you.
At that exact moment you lose all of your friends.
One of the worst feelings is the feeling of being useless. And this is exactly how your friends feel around you when you are strong enough to face any challenge on your own. If you want to keep them near, let them help you from time to time. Then show them that you appreciate what they have done to help.
On the other hand, if you don’t need their help, why would you want friends anyway?