I felt like I was abandoning him and a few of my fellow co-workers.
I've been there. Not pleasant.
For better or worse, I ultimately was pushed before I quite resolved to jump.
It's tough when situations get as such. But I did it properly, didn't go out with a bang. Just worked hard right up to the last minute, gave them proper notice, and shook people's hands, leave with a smile. I know I did my best. I guess that is all I can ask of myself.