I think committing to any post-bachelor's should involve some degree of planning for it to be worthwhile. Like, what role are you interested in moving into and in what industry (or industries)? Answer those, do the appropriate research into those markets, make a decision, and then act.
My guess would be that if you're asking the question, you're sensing a disturbance in the force somewhere and are subconsciously trying to plan for it.
Another way to look at it, though, is to leverage what you have. Look at certifications in areas that interest you and pursue them, adding the certificates to the resume you will update, refresh, and perhaps have re-imagined by a professional who has real results and credibility. Develop and nurture your LinkedIn profile. If you travel internationally, does that mean you are fluent in another language? That can be a huge asset, depending on the industry.
Believe it or not, not all companies operate within the old-boys' network and therefore require some sort of paper credibility. So, you might have to widen your gaze on the market.
For networking, join a board or chamber of commerce. The former is better, IMHO, than other options in business networking, because of the nature of the activity.