A card of races is designed to give you another chance
Racing has a structural feature that other gambling products do not: the next opportunity is always already scheduled. A card runs through the afternoon, meetings overlap, and greyhound races come round faster still, so the gap between a losing bet and the next available bet is short by design rather than by accident. That is worth naming plainly, because most advice about staying in control is written with a screen in mind and quietly assumes you have to decide to start again. Around racing you do not — you only have to fail to decide to stop. Everything below is about putting a decision back into that gap.
What exists, and where each thing reaches
Pick the last race, before the first one
A time boundary suits racing better than a money one, because the card is what carries you along. Deciding in advance which race you are finishing on gives the decision somewhere to live other than the moment after a photo finish goes against you.
The counter and the app are separate problems
Stepping away from a shop is an in-person arrangement made where the shops are. Stepping away online runs through GAMSTOP, whose single registration reaches every operator holding a British online licence. Doing one leaves the other completely untouched.
Set limits while nothing is running
Deposit limits and time-outs have to be offered by any licensed operator, and a reduction takes effect sooner than an increase does. That asymmetry is the entire point, and it only helps if the limit was set on a quiet morning rather than mid-card.
Help that costs nothing and sells nothing
GamCare and BeGambleAware operate independently of the gambling industry, are free, and do not require you to have arrived at a word for the problem first. Talking to them is not a last resort and does not commit you to anything.