Quitting Zoloft

Hello, I’ve been taking between 25 and 50 milligrams Zoloft for about 14 years for anxiety. It helps but I’ve become increasingly worried about the long term effects. I have quit cold turkey and tried tapering off several times and I always return within a couple of weeks because of the withdrawal symptoms.. dizziness, crying, fogginess, and agitation mostly. The agitation is the worst part. I find myself so irritable I can’t bear it. And then I feel horrible for having been short with my husband or family. But I struggle with if I need medication and worry about the long term side effects. I wonder if it has changed who I am. I’d like to be off it. My doctor has also prescribed .25 mg Xanax which I rarely use. It gives me comfort just to know it’s there if I need it. Any advice or insight for stopping Zoloft? And thoughts on if taking Zoloft for this long changes your personality and who you are? Thank you!