I agree with you. Trading is like a roller coaster ride and might provide us inconsistent changes since the market is unstable and is volatile.
Not every altcoin and every period is volatile. If you look at the market for the last one month we barely crossed any 600$ gap in the bitcoin price. Its rallying between 6200 to 6800. Thus one could buy at the low price of 6200 and then sell at 6800 or more. Its worth trading and will be profitable.
In that case, we must be emotionally prepared for the possible changes. We should have the eagerness to learn and adopt different changes anytime.
What changes do you propose to adopt? Its not possible to change the market course by your emotions. You just have to hold and wait till any good signs appear that might prompt you to sell your coins or stock up on more.