Ambitious people turn down good opportunities all the time. Yes to everything spreads you thin as tissue paper.

Saying yes feels like ambition and often works as the opposite, because attention is finite and a dozen half-done commitments produce nothing anybody notices. The hard part is that the things you turn down are genuinely good, which makes refusing them feel like a mistake. Choosing is what makes depth possible. Everything kept means everything shallow.

Look at what you have agreed to this term and work out which two things you would be sorry to do badly. Protect those, and let something go properly rather than slowly. A clear no now is kinder than a vague yes you cannot honour.