Save for taxes. You can choose to pay quarterly to make it easier than paying a giant lump sum at the end of the yeaar Also, look into contributing to a SEP IRA (ask your accountant for more info).

Ask your ex-colleagues and coworkers for referrals. Many times my referrals are basically working as a consultant for past coworkers and their new companies.

Don't always work for the money. Give yourself some time to learn new stuff otherwise, you'll burn out and end up treating it like a regular job.