I've been thinking about an app idea for a few days. When I pitched it to my wife during a family trip she actually liked it.

Now that I'm in front of my computer, I feel kind of scared of starting the new project. Should I pick a language I'm most familiar? Should I try something new to challenge myself? Will it worth my time? Will I be able to deliver it? Will people use it?

What about its name? Should I pick a logo? By a domain? How small should I make it to actually validate my idea before trashing the whole thing?