Is it realistic to learn 20 languages during my lifetime?

This is one of my biggest goals in life, and I want to know, is it realistic to accomplish this. I started with Spanish when I was 11, and after 3 years of very inconsistent practice, I'm finally fluent. I really don't plan on keeping with that kind of schedule, so not to worry about that, but I still wanna... show more This is one of my biggest goals in life, and I want to know, is it realistic to accomplish this. I started with Spanish when I was 11, and after 3 years of very inconsistent practice, I'm finally fluent. I really don't plan on keeping with that kind of schedule, so not to worry about that, but I still wanna know; If I were to practice one language at a time, would it be possible to complete this goal? If it helps, my family tends to live until at least their 80's, and if you need, I can always add my list
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