Trading is long run job and long term investment. You just can't get anything over night. It takes time and patience and you will not always win, be prepared also to lose. Many people give up on this way because they find it to hard. No one has said that trading is for everyone.
I totally agree with you.
Winning and losing are given when you are trading, But if you are an experienced trader, then the trading is not unpredictable job anymore. If you are trading with your knowledge, you will earn some profit. Most of traders are losing because they didnt know how system works, So experiences in trading is the key to have a passive income.
Sometimes, Everything in this life is having to take the risk, either it will work or it wont, it is as simple as that. To be more specific on this, you must have good knowledge about btc, you have to start investing on small things and trade. By doing that you will get to know when the right time is to invest/sell. Again it is unpredictable as sometimes it will rain and sometimes it will shine. But most of the time we will reap the benefits as the more we are into the trading business, we will automatically learn when to sell/buy. You must follow this approach: Understanding the current situation + Use your previous experience + Have an idea how much you have to invest/sale.