I answer that I'm really not so smart and that I know I'm right because I'm not rich. Others say if I want to get rich I should buy a lottery ticket. I say, no, the better idea is to sell lottery tickets. I got this from many people. Its well meaning and it might help.
Book chapters are OK but the reviewed papers are the publications that really count.
I agree most of the time, but there can be exceptions. If you are near finishing a PhD, you should already be sending out CVs under cover letters to ANY prospective lab in which you might be interested. I don't see any problem with getting as many irons in the fire, as soon as possible. You should indicate approximately when you think you will be done. Be warned, however, that you will probably be asked to give a seminar on your topic.