Coding. I wish I could just tell a computer what I wanted my app to do and it would write the code. I mean actually tell it, Siri style. My second biggest challenge is selling. Finding the right people to call or email, finding their contact info, keeping track of who I have called, who has responded, etc.

Keeping track of everything I do/need to do. I've tried a lot of web apps from every major and minor player out there, but nothing works for me. I'm about to start to write my own CRM/TODO/PM app because its the only way I will get what I need. I might even open source it if it doesn't end up too "hacky".

A Todo app, with a timetracker that opens up on the mac status bar would be perfect... I have faced the same problem for a long time, let me know if you are working this app, I would like to contribute

Thank you. I will keep it in mind. :)

Marketing - by far the most difficult phase to tackle if you don't have experience with it. Breaking through the noise is a major factor to success.

traction. if your product isn't inherently viral, you need to be out hustling

coming up with a business idea that will make me money.

+1

I've had a few ideas, only seen one through to release and it was successful. It's made me believe I can do it, so it's just waiting for that next idea...