FIRST, speak with an FAA Flight Surgeon on Zoloft and depression, it MAY b limiting or disqualifying depending on the class of physical. You MUST be able to hold a Class I for most commercial flying. Technically, a Class II will be OK, but Class I is required for any airline job.
Then, realize, you are starting from scratch, long, long row to hoe. One that is very expensive. You'll need about $50,000 to $65,000 to get remotely employable. Any airline job requires an ATP and means 1500 hours gained by dint of low paying instructing.