Help them understand why you deserve what you’re requesting.
It’s not enough for them to like you. They also have to believe you’re worth the offer you want. Never let your proposal speak for itself—always tell the story that goes with it. Don’t just state your desire (a 15% higher salary, say, or permission to work from home one day a
week); explain precisely why it’s justified (the reasons you deserve more money than others they may have hired, or that your children come home from school early on Fridays). If you have no justification for a demand, it may be unwise to make it. Again, keep in mind the inherent tension between being likable and explaining why you deserve more: Suggesting that you’re especially valuable can make you sound arrogant if you haven’t thought through how best to communicate the
message.