In trying to find this balance, it helps to understand what you can and cannot emotionally detach from. For example, it may be important to feel you are doing meaningful work. But it's important you emotionally detach from "under all circumstances."
Many people use manipulation and guilt to get other people to do what they want under totally unreasonable/unrealistic circumstances. If you are able to emotionally detach from being affected by this type of behavior, they lose the control they have over you. You're then in a much better position to dictate a situation where you can a) work on stuff you find meaningful, b) provide high value to the company) and c) do it on your terms. Sometimes the only way to do this is to switch managers and/or jobs.
Many people use manipulation and guilt to get other people to do what they want under totally unreasonable/unrealistic circumstances. If you are able to emotionally detach from being affected by this type of behavior, they lose the control they have over you. You're then in a much better position to dictate a situation where you can a) work on stuff you find meaningful, b) provide high value to the company) and c) do it on your terms. Sometimes the only way to do this is to switch managers and/or jobs.