Lacoste2020
Once I was in a similar situation as yours, being drunk I lost 25K in one evening. This money was won from a £150 deposit. Playing roulette at 1-5K per spin was crazier than riding a rollercoaster... On next morning I did not wanna wake up. When I was having a coffee and smoking a cigarette I thought - WTF I have done and what I could have bought for this money...
These thoughts in my mind were following me for a couple of days and then I realized that no point to regret about anything as there is no way to turn back time and the life still goes on.
And the important thing that was calming me down is that I lost not 25K of my own money but only £150.
This gave me a lesson for the rest of my life - never regret about the past! Regretting about something is pointless and if you regret - you feel bad and only hurt your self more.
Focus on what's happening now and your future.