My best motivation is the freedom trading offers from the regular 9-10 hours jobs . The money, the time and most especially my inner satisfaction and peace as I passionately love trading. Trading have help to build my patience level and tolerance.
is it really because of peace when trading ultimately requires someone to keep watching the market for potential sideways 
.I could never find my peace in trading when I did it back then, good thing I already backed out and instead switched over to just investment.
but I can see majority of people are motivated to turn their small capital into big capital with trading in short time so that they can get foundation to build up portfolio in investment and I see that as a logical choice.
because investing with small capital is essentially just wasting time, can't afford waiting entire year to get 10% APY where our investment is just $100 that means $10 yearly definitely does not make sense
.so for some people trading is the way.