For any necro readers, I just want to add, this is good advice but completely out of touch on one point.
You should absolutely not be spending 15min per job app. This is how you end up permanently unemployed.
Curating your resume and cover letter to suit the needs of the position takes an hour at minimum.
The job search is hell, but shotgunning applications just makes it a longer hell.
Keep programming every day, get your green squares, and apply for 3 jobs every day, spending 5 minutes on two of the apps and 15 on the third. Things are tough right now, but if you do that you will get through.
And as others said, talk to people. You are not alone, and the people who still post on social media are posting about how lucky they are, not how good.
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