This is a fantastic resource.
>> ...the data shows that solo founders rarely succeed. The emotional burden is just too high.
I am a solo founder and yeah, I completely agree with this. I severely underestimated the emotional burden of going it alone. I am in a much better state now, but it was definitely a struggle. If I had to do it over again this is the main thing I would change - be more open towards and work harder towards finding a co-founder.