I see this as a positive thing. You now know what you don't like and don't want to do. Does that get you closer to what you want to do? You only have one life

I see this as a positive thing. You now know what you don't like and don't want to do. Does that get you closer to what you want to do? You only have one life. You failed and learned something about yourself. Now move forward. Turn envy and jealously into a positive emotion like motivation or inspiration. A therapist can only help and if you want to make tremendous career progress I would suggest seeing one. Focus on yourself and what you can change and control in you. I bet if you learn about your former colleagues life (who is now a director) and work that you would probably not want the job. There's a reason you turned it down right? You wanted to see if product management was a better fit. But for whatever reason you were wrong. This is not a bad thing. Did you quit too hastily when maybe you could have found another role at your previous company? What made you choose program management after product management? Ask yourself the deep questions and you will be enlightened.