I'm currently on salary at my work so I have a 401K, however starting soon I will be going back to contract work instead. I'll still be working for the same company, but due to that change I'll no longer be able to contribute to the 401K.

Do I leave the account as is? It's through Betterment, and it only has about 20K in it currently. Or what other options do I have?

I'm only just recently getting better about investing/retirement/money in general so I know I have a lot to learn!