Leaving the company at the wrong time
I work at a small company. I have received an offer for a better job elsewhere but they want me to join asap. My issue is that I am critical person in the team and leaving soon would leave them out to dry. I have a 1 month notice period but I want to leave in 3 weeks. The thing that adds to my guilt, is that my boss is currently overwhelmed by another hiring process that our Dept head stuck her with. Is it normal for me to feel this guilt? Also am I burning a bridge by leaving this way?