If you decide for yourself that you have a deadline for finding purpose in life. Then I suggest quitting your job and just explore the world. Especially if you're in a job that occupies your mind all day. If you still want income get a job that requires no use of your brain.
Start focusing on your physical health and spend time meditating. Search for new experiences until something kickstarts your emotions. Find the thing that makes you jump out of bed in the morning with anticipation.