There are times when being, and staying, invested in anything is hard. There is a reason a portfolio of stocks and bonds or stock and bond funds is called an investment portfolio. You have to be and stay invested in it to reap the rewards.
CEOs do it’ athletes do it; in fact, anyone who needs to be able to achieve a certain level of performance in order to achieve a specific goal constantly assesses where they are in relation to where they want to be. This is to ensure that available resources are being utilized optimally at all time.