Explain the phrase: 'Accept the things you cannot change' — what does it mean?

The phrase "Accept the things you cannot change" means accepting circumstances that are beyond your control. In the context of working with databases, this can mean that some system, architecture, or external constraints cannot be changed, and it is better to focus on optimizing and improving what is available.

For example, if a project uses an outdated DBMS with limitations that cannot be eliminated without a complete switch to another system, it is wiser to accept these limitations and work within them rather than spend resources fighting them.

This helps maintain focus on achieving goals and avoids unnecessary stress and time loss on unsolvable problems.