I think this is good advice as it's definitely more difficult to get ahead without the help of a mentor. One problem I see quite often in my industry with young people looking for a mentor is that they try to force it instead of letting it happen naturally. I've seen and heard about numerous young professionals that will just approach someone they don't really have a connection with and ask them to be a mentor. This ends up being quite awkward for everyone involved because the more senior person doesn't necessarily want to devote much of their precious time (of which they have very little) to someone that they aren't particularly invested in. Sort of a catch-22 but definitely best if it can happen naturally.