@Justin Michael Johnson
I have been in several partnerships with life-long friends. Varied results; all stressfull. First, be sure that you goals are actually the same goals. If they are not -- that is ok. Maybe you want to partner on several deals but also be allowed to have other business on the side for yourselves. In your business agreement, there should be goals. One of them should be "To always remain life-long friends". You must make that as part of your "WHY" or you risk losing each other in the process. Losses in your business are hard enough, but if you have business and personal losses at the same time -- it can be crushing and have a lasting effect on your business success.
My suggestion is to ensure that the operating agreement (assuming LLC) is very specific about who is responsible for doing what actions. It is imperative that if anyone is taking money from the business - they are held accountable by basing payments on performance rather than hours. If only one person is accountable for sales there will be stress when numbers are not met. To be truely successful you must commit to both of you being persistant in the game together 110% of the time.
In a true partnership, if one fails, all have failed and it is everyone's fault. Don't assign blame, don't have anger, take responsibility for both of your actions, move along with that in mind.
Finally, make an exit plan in the event one of you want to leave and an exit plan in the event something terrible happens to one of you. Who gets that guys portion? The business or families?
Good Luck!