It’s easy. You accept the other offer, make damn sure all the paperwork is in order, give written notice, offer to hand over what little you’ve done so far and move on.Most jobs come with a probation period, and this is what a probation period is for. If an employer doesn’t like your work, attitude, or punctuality or if budget priorities have changed, you could have found yourself booted out the door all the same. It works both ways.The catch is that you can’t keep doing that, and you may find you need to explain yourself a few jobs down the line if you end up with a string of very short term jobs.Don’t do it for a marginal difference in pay, because you will be burning bridges. Make sure the job you end up taking now is actually a good fit skillwise and salarywise for you.