You can start your business with your friends without any causing trouble by the following steps:

1. First, set role to each one of you. Make sure that the roles youve set has equal power and perks in your business.

2. Set your percentage profit equally. Money talks here, this is the most common trouble of a business owned by friends.

3. Set your goal. Have your mission and vision and make it happen.

4. Have trust with each other.

5. Be honest, its always HONESTY that builds the foundation of a business.

Hope this helps.