Team cohesion during a project comes from healthy debate and then healthy commitment to the decision. I'm not gonna lie - it does suck to be the minority when it comes to a final decision, and they can grate on you over time. However, keeping your emotions and professionalism in check will mean a more cohesive team.
If you find yourself in the minority a lot, something to do would be to really think hard and work on trying to get a shared knowledge set with the others in your team. What do they know you don't? Or, perhaps, what do you know that they don't?
Heads up: As with any terse bit of advice, there will be exceptions of course, and subtleties and nuance that can't possibly be captured in a Byte of Wisdom. This has been what I've experienced, I'd love to hear yours in the comments too!
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