No one can say for sure, John.
There are different types of depression, endogenous and exogenous.

With endogenous depression, there is no apparent precipitating cause; while exoennous depression is a state of depression that is precipitated by events in the person's life different and more severe than normal grief. Both are treatable during the depressive state.

Endogenous depression is inherent; within the being; genetic in cause. The genes do not change. But, medication can help overcome the results of the lack of serotonin, or other brain chemicals lacking. With medication, therapy and self care, people can lead happy, filled lives.

Exogenous is situational. When the situation is over, people can and do return to a previous state of happiness, or "normalcy," whatever that may mean to them. Life can, and does return.

If you are doing well on your medication, and practicing self care, be happy. Don't go looking for the clouds on a sunny afternoon. Continue to do what's working. Practice caring for yourself physically, mentally, emotionally and spiritually. Doing so will keep you shored up when life's storm once more hits. And we know it always does! (Not necessarily talking about an episode of depression here, just when life throws us a curve ball! LOL!)

I wish you well. And glad to hear how well you're doing!

Peace!