I appreciate your advice but I don't think you can finish everything you start. Believe me, I don't give up easily.
Vincent actually means to conquer ;)
This was just the drop that made the bucket overflow. We just had a conversation on Skype, I apologized, but we're not continuing our project/ collaboration. He did not want to give me the break that I dearly needed and thought doing that would make me quit anyway. I did not want to continue this way.

Thanks again!