Life is one big training ground.
You do stuff. Stuff happens. You get valuable feedback. You get valuable lessons.
If you look for them.
Many (too many) people don’t look for them. They stumble through life with their eyes closed. Same mistakes, same ruts, same cycles.
Open your eyes.
Learn from everything. Use everything to become better and grow into a better human.
Take control and use life to sharpen you.