When you have to fight for decades in the workplace, the probability of encountering a change of boss is not low, so you have to be alert and prepared at all times.
Do you think about learning skills every day, but you are exhausted after work and have no strength to continue learning. In this state, you need to learn energy management.
At work, when we face promotion and salary increase, we might as well give up the me-centered thinking: "Why not me", but spend more thinking on the people or things around us: "Why him?"