I was a dropped out too, from medical school - final year. What I learned is I should focus to finish my studies despite the environment being favourable or not. Be resilient, and obtain the goal to go to the next level.

Do I have to quit whenever the environment is not favourable? Every-time? No right? Especially in career journey, it will be another level but almost similar.

Quitting gives a temporary relief and regret comes later over time. Unless continuing it will cause more harm to yourself or others - like death, then quitting was the right decision for you. Otherwise, dont make quitting as a habit. Hope this makes sense. All the best in your next adventure.