It's not "No I Can't" or at least it shouldn't be.
Thinking of doing a Tough Mudder? YES I WILL.
Thinking of applying for a better job? YES I WILL
Thinking about taking a huge jump to something that scares the hell out of you? YES I WILL.
No doesn't get anywhere.
Like my mother always said "Action speaks louder than words." When you say "Yes I Will.." then YOU DO.
Do it Now.
In reality- what do you have to lose? A house? A Car? So what. Those things come and go. What is standing after the storm means everything.