What advice would you give your fellow service members and veterans about transitioning back to civilian life?

Prepare for separation before it happens. Save money for subsistence, have a target position or career in mind and do everything you can to prepare for it before separation. Be realistic with goals and expectations. If you did nothing in service but serve in a line unit, didn't get additional training or seek educational opportunities, then do not expect anything except an entry level position. If you sought out training and educational opportunities and were promoted ahead of peers then you may be well surprised by a middle management position especially if you have a tech heavy Occupational specialty. Do job market research and put effort into developing a functional resume. Window dressing will get you an interview but a professional appearance, positive attitude, self confident demeanor (not arrogance) and a marketable skill are the keys to employment. Approach the employment search like a job. Dedication, preparation and perseverance will pay dividends.

Don't do it. Re-enlist if you can. The civilian world is over-rated.