Rick Ferri, kind of a broken record, but at least it’s stuck on a great song — on buy/hold/rebalance.

(His other “greatest hit” song is that one about low-cost, index-based, passive investments) 

http://www.rickferri.com/blog/investments/a-balanced-portfolio-for-a-balanced-life/

Many financial pundits criticize a balanced approach. They say a buy, hold and reliance strategy is simple-minded and a relic of the past. Their solution is to be tactical, meaning aggressively move in and out of the markets. As it turned out, more than half the experts fail to time markets correctly and their portfolios have fallen short of the simple strategy they mock so much.

Nothing new, here, but Rick always explains things so nicely, clearly, concisely, and includes some great illustrations.