How did you get your diagnosis? Every time I read the symptoms it sounds like me, but it also kinda sounds like everybody. What's the signal that it's a pathology worthy of treatment?
Do these symptoms cause me struggle with my everyday life? Are things that normal people do all the time oddly difficult for me to complete?
If so, go get a diagnosis. Everyone struggles with procrastination to an extent, but if you try to sit down and try to start the work and just CANNOT emotionally bring yourself to do the work or get your brain to engage, then it's probably something more than just normal procrastination. If you are frustrated with your inability to remain focused and complete things on time that are just not inherently interesting to you, recognize that most people don't struggle like that. It's not a discipline problem it's an emotional regulation problem which is common of ADHD.
I've had so many problems with this in high school and college, it's unreal. I've only started to fully comprehend my problems with anxiety this past semester but reading all of this makes me wonder if there's something more to it than just that.
Most people won't like to do uninteresting things, but the threshold for boredom is extremely low in those with ADHD so they will struggle a lot more to stay focused. It's a spectrum unfortunately, so there's no one definitive measure that says "that's definitely ADHD". To be honest, if you find yourself seriously questioning/wondering about whether or not you have ADHD it probably means you're struggling to an extent and aren't 'normal'. Otherwise, it wouldn't be something you are questioning.