I need your advice! I have the dream to retire when I turn 40.

So, I’m 30 years old and I’m living an average life. i.e. after having finished college I got my first job developing Apps for a small company. Then I moved to a huge old-school company… I’m not doing the innovative things I always dreamed of when I was at university, but I’m earning good money and I’m just working 35 hours per week which is the best.

Since o was 25 y/o I’ve been dreaming of creating something that will give me enough money that I can quit any job and then I can focus in my own projects and enjoy life without doing stupid work (my opinion) for others.

How realistic is this dream? I know I’m not the only one having it. How should I start?