Programming has taught me
1. Importance of patience, friends and family and yeh StackOverflow too...
2. Importance of small contributions towards dev community.
3. How smaller things can make big changes.
4. Helping others and getting help if you get stuck.
5. Anyone can code, but very few can build robust solutions. Project not just coding but it needs preparation and planning too.
6. Importance of reading documentations, writing test cases, debugger programs.
7. You can learn things even if you have no idea about it. It just takes your interest.