Some business relationships naturally tend to be more beneficial than others. For example, if you are targeting businesses that cater to the wedding market, it makes sense to develop relationships with people who work in businesses such as event planners, florists and caterers. If you’re a mortgage lender, good contacts for you include realtors and an insurance salesperson. By building business relationships with people who share the same niche target customer that you do, you are forming what is commonly referred to as a contact sphere. Contact spheres are generally formed by people who are in compatible but non-competitive professions. As you get to know each other and develop trust, you can refer business to each other and help each other to be successful.