How long can you stay in orbit?

Excuse me, I was wondering if you could elaborate on the duration of staying in orbit. Are there any factors that affect how long a spacecraft can remain in orbit? Does the height of the orbit play a role? What about the mass of the spacecraft or the force of gravity from celestial bodies? I'm also curious about the potential challenges and limitations that may arise during extended stays in orbit. Could you please provide some insights into these aspects?