Week of
An offer with a Friday deadline
An offer from the other firm sits in your inbox, and it needs an answer by Friday. Monday is for reading the contract properly, including the clause on notice that everyone skips. On Tuesday, ring them with your two questions. Wednesday is the hard one: telling your manager before the grapevine does, in their office, standing up if that helps. By Friday you can sign or decline, one clean line either way, and spend Saturday morning on something that has nothing to do with work.
Love
Your partner, or the friend who hears everything first, has a stake in this: a longer commute changes who does the school run and who eats alone. Ask on Monday evening what they would actually mind. Listen to the end of the sentence. If you are single, tell one person who knew you before this job. They will ask the blunt question, and this week you need it.
Work and money
Your current manager may come back with a counter-offer on Thursday, and it may be flattering. Flattery is not a reason. Write down on Monday the three things that made you look elsewhere, then check whether any new figure fixes them. If you do go, finish properly: a clean handover note, every password passed on, no parting shots in the kitchen.
Body and mind
Decisions sit badly in your legs, so give them somewhere to go. Book the gym, a pool lane or a hard run for Wednesday evening, after the conversation with your manager. Go to bed before midnight on Thursday; contracts read worse when you are tired. A second coffee will not make you braver, only louder.
Friday, for signing or declining in one clean line