[oomkiller]

Please Relax.

Don't leave. Write down your problems, and logically develop solutions to work on solving each of them. It sounds like you're in charge of your company. If so, change things up so where y'all can work together to deliver a successful product without killing each-other. If there is too much work, take on less, and plan better.

If anxiety is an issue, there are many anti-anxiety drugs that you can use to help control it (see /r/nootropics and/or a psychiatrist). Anxiety issues can affect your perception in many ways, and they're often invisible, which is what makes things seem so difficult.

Also, you may need to sit down and figure out exactly what you want out of life, then align the rest of your goals and plans with that. Getting a good life balance can be tremendously helpful in these situations.