NOT from places like here. Unless you are already well-versed and schooled in economics, finance, etc., your best bet is to HIRE someone. These guys have access to historical data, computer algorithms, and vast resources spread out over the world to give you the best advice.
Before you hire one (and I did years ago), you need to determine things you will want/need in the future. Level of spendable yearly income; where you want to live; things (like travel) you will want to do; planning on working after you "retire" - perhaps P/T at something you always wanted to do; what about spouse, kids, parents (yes, parents - being saddled with one as they enter those last stages financially unprepared can drain yours); your own health issues, especially if you have to provide your own insurance....................and on and on.
Do you want to live here in the US or are you willing to live somewhere else that is less expensive - but not have quite all of the things you're currently used to?
Depending on your current income and retirement fund, an aggressive approach to make it in nine years can be risky. How averse to risk are you?
These, and a LOT more, were what encompassed my first few meetings with my guy, so start doing your homework.