One way I try to cope with being unemployed is doing free online courses, as much as I can - because motivation isn't high. At the end of the day I feel I haven't totally wasted my time. There are free Coursera courses, Cisco Networking Academy, FutureLearn, etc.
There are Cisco Netacad courses that even give you a free certificate and a badge of completion - I got one for Linux Unhatched recently and I haven't felt such a feeling of accomplishment in a very long time - although Linux Unhatched is a minor course, just covering the very basics.
I think I know exactly how you feel. Stay strong - the emptiness will dissipate. Going out and sitting on a bench in the park, watching birds and people, having a cup of coffee, helps me with this.
The only constant thing is change, as Heraclitus is credited with saying. It's another reason I try to hold on - trying to not sabotage a possible future me that perhaps has figured it out and needs me to hold on now. Also, knowing that CTB is the "forever decision", it makes sense to keep trying to improve things in this life as many times as I can withstand - the ticket for the show is already paid anyway.
