You're not alone in feeling this.
ADHD
Source: NHS / published studies
The reality
ADHD is a real, recognised difference in how attention and impulse are regulated — not laziness or a lack of trying.
A word of kindness
If your brain won't let you start, keep, or finish things the way others seem to, that's not a moral failing. It's a different operating system, and it can be worked with.
Something you could try right now
Make the next step absurdly small — 'open the document', 'put on one shoe' — because starting is the wall, not finishing. This is how your brain works; you're allowed to work with it, not against it.
Nothing here is a diagnosis or therapy. Figures are indicative population estimates from public health bodies — not advice about you.