I was wondering how long everyone typically experiences stability between episodes. Also, what is the longest stable period you have enjoyed?

I've almost made it 6 months and I am so grateful that I didn't crash and go into depression or have a mixed episode relapse. The last episode I had was my first and I don't know what to expect. My mother experienced mania and she has been able to keep it together for almost 15 years. I am praying I can follow in her footsteps.