As a successful trader, you should focus on the process instead of the money, because the process is the must important thing for you to get more experience in it, and once you are focus it you never lose your money in trading, so as successful trader you must always be fucus on the process of your trading, for you to get a good profit.
Money is of course important, because with money as capital you will get profits. Experience or knowledge can be gained by trading using a demo account but the pressure is different, so money is also important.
Use money that you can afford to lose, so trade directly with real money instead of just using a demo account, so you may lose money but knowledge increases and slowly knowledge is used to gain profits in the next trade.
However, experience is the main thing in achieving trading success, from experience we can apply the theory that we have previously done, so that from this we will feel the difficulties that can be faced and how to solve these problems. Many traders have minimal experience and immediately jump into real trading in the hope of making easy money, and in the end they regret it