Consider joining a group of noncompeting consultants, for several reasons:
You can share an office and its expenses.
You can exchange leads for jobs: Your associates may turn up leads for your specialty, and you may do the same for them.
The group gives you an entity you belong to and overcomes some of the loneliness of consulting.
You’ll meet periodically with the group, exchanging information and discussing mutual problems, such as marketing, pricing, and potential clients.
An alternative is forming your own informal group with a couple of noncompeting consultants whom you meet with periodically for the same purpose.
You should also consider having your own consultant for particular help. Because marketing is so critical and probably a real weakness, look for somebody for a reasonable fee who’ll help you develop a good discipline and skill in marketing yourself and using your time effectively.