MELY, it depends.... are you an investor? or a trader?
Rule # 1 for investing: Invest in things YOU personally like, chances are, if you have an affinity for something, millions of other people do as well...... :)
# 1 *A) If you can identify a unique business operation, worthy of investment (example: iPhone or Google) before everybody else realizes the potential, your investment can turn out to be quite lucrative in the long run.
The generalization/notion of "dont fall in love w/ a stock".... is redundant, overused & absolutely does not apply to every, individual stock.....