We're also in the early stages of being a start-up and there's also a big discrepancy in the personalities and working styles of all the founders. The thing is

We're also in the early stages of being a start-up and there's also a big discrepancy in the personalities and working styles of all the founders. The thing is you just have to accept it and push through it. The only thing that matter is the results. If you have issues with your partner, deal with it in a way so it doesn't interfere with the operational aspect of the business. For instance, myself and my one partner have a significant personality clash; we used to live together last year and we'd clash a lot. We came to a great arrangement - when tension reached a point where debate wouldn't work anymore, we'd fight it out. Not a real fight, but a physical tussle none-the-less. No punches where thrown but there were bruises and scratches afterward. However all our tension would have been defused. I'm not saying you should wrestle with your partners, but find a lateral way to defuse the unnecessary retardants that are limiting your overall productivity, or in your case, the company's morale.