You cannot accept anything new into your life with a closed mind. This applies spiritually, mentally, health-wise, socially, sexually, professionally, family-wise and otherwise.
An open mind is not usually foolish. Being open means weighing the benefits of every decision.
Most importantly, do not conflict with your values. Hypocrisy is a common hindrance to progress.
P.S. Despite my warnings about abandoning TTSP, something within keeps bringing me back again and again. I intend to only spread positive messages.