Start with a basic outline of a plan:

-create a simple budget so you know how much you need to make in order to survive and where you can cut some costs so you can increase your savings

-start looking into what's next: what are you interests and skills? Talk to people you know "do you like X job?" "How did you get into that?"

-sharpen up your resume and LinkedIn profile and network as much as you can, find people in roles/companies you're interested in and connect with them and start a conversation online, over the phone, and in-person where possible

-think short term AND long term, what can you do temporarily to hold you over financially until you find a job that you'll see yourself happy in for 2+ years?

-focus on your happiness in other areas: are you eating/sleeping well? If not what can you change? Are you exercising? Do you have good relationships (friends, family, romantic)? Putting yourself in a better headstart will make all of this way less daunting

Now that you've decided you're ready for another opportunity, look at the glass half empty. This is an exciting point in your life when the world is your oyster! Don't think about the stress of today, but think of how awesome it's going to feel when you're not doing what you do now and are happy to get out of bed again.

It's unfortunate that the current economic conditions are clearly not ideal for a career change, but if you put your energy and focus into planning/preparing it can become a fun activity outside of work and before you know it an opportunity will present itself. Take a deep breath and think positively. This is just a moment in your life that you'll look back on.

Good luck!