His view was treat it in the same way as you would a death of someone close or a painful divorce, allow a time for breavement / mental adjustment, not an unrealistic statement when you consider what people in the services put into their careers. He viewed it as a 3-6 month time frame even if you have found something else and to allow time for adjustment and not just ignore.
I think that is excellent advice and wish I had taken that approach when I pulled the handle. It would have saved me quite a lot of grief.
If you plan your departure well in advance (which you pretty much have to do in Service life) you should have built a decent financial buffer in order to fund (survive?) a "thinking" gap.
Perhaps does not apply if you have already lined up/planned for your next job and career?? (Not everybody does...I didn't).