Thanks for all the positive comments fellas, I cope with downs now, and have learned not to turn in on myself.
A see a lot of people with far worse conditions than me, and my heart goes out to them.
The good thing about this job is the flexibility, when feeling low, but it is sometimes tiring when you are catching up !
If anyone is suffering at the moment, I would agree with the other posters advice, particularly talking therapy, you can get six sessions of CBT if you see your GP.
Three things have helped a lot -
1. Having understanding friends ( being able to speak freely )
2. Exercise - gets the good chemicals going
3.Giving up alcohol - struggled for many years, until finding the book " kicking the drink easily " by Jason vale, which probably saved my life, ( It was really easy ).
Sorry if I come across preachy, just wanted to encourage anyone suffering at the moment
