The app Pete mentioned is called reachout worrytime – you stick your worries in a vault type area, then revisit them later when you can unpack them properly - https://au.reachout.com/tools-and-apps/reachout-worrytime
The CBT process Pete uses to challenge his thinking is court case -https://www.getselfhelp.co.uk/CourtCase.htm
Mind – www.mind.org.uk call 0300 123 3393 or text 86463
Samaritans – www.samaritans.org call 116 123
Shout – www.giveusashout.org text 85258

