it is good to have targets in life when it comes to money. i have been doing it for a couple of years now. although in trading i can't really say i am setting any kind of targets because of the very unpredictable nature of it and also the fact that (alt least for me) trading takes a lot of time and spending that much time on trading is not possible for me these days although i am mostly missing out on many good pumps.
wow. I am very impressed that you were able to turn 25 into 200. that is a pretty incredible rate of return. What is your strategy if you dont mind me asking?
for bigger markets like bitcoin you need to learn how trading works. the technical analysis is also helpful.
for altcoin trading the best thing to do is to watch the market for pumps and get in before the hype and sell on top.