I plan to start the company before I am 30 years old. This mean that I have 2 years and 3 months to accomplish this goal.

Here the steps I would take:
1. Find at least 100 ideas.
(I have 60 ideas now)

2. Choose the profitable and cool one.
(Must be profit and maybe cool)

3. Set dateline which should be at most 6 months.
To force me to finish it, write blog about this project
daily.

4. Publish beta versions to see feedback about software.

5. Decide how to distribute the software.