Signed the offer letter Friday afternoon and spent the whole weekend convinced I picked wrong

Signed on Friday at 4pm, closed the laptop, felt genuinely relieved for maybe ninety minutes. Then Saturday morning I woke up doing math on the other offer's equity again, the one I turned down because the base was ten grand lower but the team seemed sharper. By Sunday night I'd convinced myself I picked the safe option out of exhaustion, not judgment, because I was so tired of interviewing I just wanted it over. I know accepting was reasonable. I had good reasons written down even. I just can't tell anymore if those reasons were real or if I built them after the fact to justify being done.