When we started our startup 4 years ago in the ed-tech space, I was very passionate about it. We built a great product which people are using and we scaled up at a very fast pace. We also have the full support of our investors. However, due to ongoing conflicts with my co-founder I don't feel passionate about my startup anymore. I feel like I work for my co-founder and have no sense of ownership now. We have tried to sort out our conflicts many times but it's getting worse everyday. Now I'm thinking quitting would be a better option for me, since at least it will give me peace of mind. However I am completely clueless about what my next career move should be and how should I prepare for it. I have total of 10+ year of experience in web/mobile enabled technologies. One thing I am sure of is that I don't want to create a startup as of now. What would be some good career routes for me to move on to?
If you haven't already, you might want to look into external help for your strained relationship with your CEO (yes, just like marriage counselling). Relationship experts can really improve the quality of the communication and help resolve existing issues.
I don't know what your personal goals are, but you could probably try becoming CTO at another company between 2x and 5x the size of your startup.