High-yielding stocks and/or investments are never a good idea for an investor. Chasing a high-yielding dividend stream is a bad bet to make. Those dividends can be cut or those companies can go out of business.
Over concentrations, chasing yields, and not doing real research is going to cost you! Great example: Master Limited Partnerships had exorbitant valuations several years ago but dropped significantly. When the value of your asset drops 60-80%, your total return will be garbage.
High dividend streams, in our opinion, are always highly suspect. Do your research!