i have a 401k worth 84000.00, should i leave it alone or look for other options (ira)?

Terry Says:

Sorry, but you have NO other options — unless you quit your job!  If you are still employed by the company, you must leave your 401(k) plan with them.  You’ll have to choose between the investment options your plan provides    But an advice service like Betterment.com could help you make that fund allocation decision within your plan

If this is a plan with a previous employer, you can do a direct rollover to Fidelity or Vanguard (they will help you with details) and they will give you investment advice appropriate to your age and financial situation.