I think Newt’s personal, political and, er, “business” life can be summed up by his primary motivation to be admired, and thus his willingness to say anything and play up to anyone at any time who will stroke and feed his inflated ego (and bank account).
Trouble is, it’s near impossible to pander to 100% of the people any percent of the time, and thus his steady infidelity to whatever and whomever he’s just committed to.