It is in your head and you don't need to work anything out right now. In fact, it's impossible to make future decisions today, we all think we can, but we can't.
If after some decompression, your future self suddenly gets inspiration about what she wants to do, that's what she'll do. You actually have zero say in the matter.
I have a full time working spouse who will continue to work for the next 12 years at least. Sure, that rules out living like a nomad, or moving to another country, but I don't put much energy into focusing on what I can't do. I can't become a professional ballet dancer either, but I don't stress too much about that.
Re: freedom
This is the concerning part for me. Retiring doesn't free you from anything other than having to work. If there's more in your life that you want freedom from, then that points to a bigger issue in terms of your happiness and life satisfaction.
Also, having enough hobbies to fill your time is not the same as having a rich and full life.
Instead of fixating on what you are going to do, I recommend introspecting on your present and working on why it isn't fulfilling you.
I might not be fully understanding your comment here (non-native English speaker). Are you saying, ignore it and let time figure it out?
The freedom I was referring to has a lot to do with our work. Our jobs allow some flexibility but we work with team members around the globe with different time zones and at times, require jumping to things asap. This creates anxiety for me. I've been working on it and I've gotten a lot better compared to years ago but I really don't like having to be on call. It is one of the reasons I wanted to get FI asap (not necessarily RE). We also have senior dog I would love to spend more time with but work often times get in the way (meetings, calls, etc). Just like BigMoneyJim, I'm sure I have other underlying issues that are buried under all those work related issues and stress I'm dealing with and working on and they might surface later on but right now, my main issues are my work. You seem to get the impression that I don't have a fulfilled life. Can you elaborate which part of what I said gives you the impression? (serious question).
"The problem is, after I realized we can actually quit the rat race, I feel... sorta empty. It was quite anti climax. I worked so hard to get here and now I am here, is that it? What's next? What do I do now? What do I want to achieve after this? I feel a little lost and without direction."
Fulfillment doesn't mean sense of accomplishment or anything along those lines, it means being happy and at peace with your current life, which you clearly aren't.
From your OP and your statements about your job, to me, these are not the sentiments of someone who is truly getting the most out of their life, this sounds to me like something is missing, especially paired with a larger pull towards some vague sense of constrained future freedom.
I'm not suggesting your life isn't full and rich, I don't know you at all, but I am rather confident that you do not sound like the people I know who would describe themselves as living their best lives.
Your work definitely seems to be a barrier to living your best life, but it's very very important to distinguish the difference between removing barriers to happiness and actually building happiness.
Having a barrier in the way of your best life is like having a broken leg in the way of exercising. Getting rid of the cast doesn't suddenly make you fit, it just allows you to start doing the work of becoming fit.
I'm not saying to ignore anything, but I am saying that you cannot know what it will feel like to have all of these obligation barriers out of your way, so don't try to micro manage your future self.
What you may need to do is take some time to get to know who you are without all of these pressures in the way. If you can't anticipate what a jobless version of yourself would thrive doing, then you don't actually really know that version of yourself very well. Give her some space to develop into what and who she is and don't try to pre-strangle her with expectations.
I can firmly say that who we are while living lives that aren't right for us is very different from who we are when we are living our best lives.
Only unmet needs are motivating, and when you have enormous external pressures creating endless unmet needs, it's impossible to even hear what your own internal priorities are above the roar of priorities thrust upon you.
Basically, you can't even hear your own core needs while other louder needs are in the way.
Without all of these external pressures, you may stay more or less the same, but you may end up like some of us, wildly different from who you thought you were once you finally have the psychological quiet to hear your own core needs.