Help. How do you handle a resignation for a company you love and adore (and they in turn) but you have an opportunity falling your lap that you can’t pass up?

I work in hotels. I love my job, my property, and my team,. I’m not actively looking I just had an opportunity fall onto my lap. Bigger salary bigger hotel a lot more amenities to offer to guests. Better area of downtown. I don’t think HR can match the salary.