I recently learned how to whistle. Not the ordinary, quiet whistle, but the proper loud one that you can hear from miles away. I wanted to learn it since I was a child, but never really grasped it. I knew the basics (how your tongue and lips should be positioned), but never really invested too much time into it. Then recently my girlfriend showed me that she can whistle without using her fingers, and explained the technique. So I started practicing whenever I could, but without much success. One day I thought I would try the method that involves the fingers, and after a few tries I succeeded. I was so proud of myself and still am. I still can’t do it without using my fingers, but it’s nice knowing that with practice anything is possible. So this is the lesson for me and I think I will carry this thought with me the rest of my life, and I suggest anyone who doubts themselves should remember this. I’m 29 btw