I do not rely on my bitcoin investment for my daily needs. This can be very risky and I have a family so I will never take that risk. I just invest about 30 % of my monthly savings in bitcoins and few other alt coins (like ethereum). I do not consider any coin which is not in top 20 and strictly avoid any new coin. Even if I make a million or more with bitcoins, I will not retire so soon. I will keep working to remain busy. It is possible that I may switch from my regular job to a business  if I am able to achieve that much target with my bitcoin investment.