For me, profit is the main motivation for most traders. It's not the only key to long-term success. The often overlooked but crucial factor is risk management (this is very important), without this, even the most skilled trader can lose everything.
Managing losses wisely ensures you survive long enough to enjoy the gains.
This risk management is one factor that traders neglects while trading especially those traders that are lucky to make some good profits from trading, they feel they have arrived and are now experts in trading forgetting to know that it's not all the time they can make profits from trading and they start making trades with higher amounts such that their money won't sustain them for longer trades when they run some losses. Risk management is very necessary because that is what propels a trader for long term trading success.