Rejection from YC still hurting.

Now, I feel like I'm in this weird 'abyss'. 

My business/product isn't good enough for YC, so should I keep working on it? Should I use their decision as a data point? Is all of this work futile?

Everything feels bigger now. All the things I need to build.. Things are getting more complicated with every line of code. Am I building something too complex, or something that is fundamentally too big for one person to be able to handle.

I've been thinking of other products that I could pivot to. So stupid... I could spend my whole life looking for the next shiniest thing, and never really finishing what I started.