I’m currently #2 on Product Hunt with my bubble app 
My name is Omer and Im a solopreneur - Im dealing with hair-pulling (trichotillomania) for many years now and that what inspired me to build SoloUno
I used to smoke cigarettes and had successfuly rehabed using a rehab app so I thought it would be easy doing the same with my hair pulling, right?
Apperntly not.
I found out that hair pulling, like nail biting and skin picking are a part of a group defined by the DSM-5 as Body Focused Repetitive Behaviors (BFRBs)
This group of habits are defined by peoples difficulty to completly stop them “cold turkey” and many people just tend to live with them
One thing became very clear to me: for many people with BFRBs, simply deciding to “just stop” isn’t enough. And when an app is built entirely around the goal of never doing the behavior again, every slip can feel like failure.
So I decided to flip the equation with SoloUno.
Instead of focusing only on one huge, all-or-nothing goal, SoloUno focuses on small daily wins - becoming more aware of the habit, resisting urges when possible, reducing the behavior over time, and building confidence along the way.
And I wanted to make the process fun and engaging enough that people would actually want to keep practicing.
I started reading research, tried therapy myself, and learned about evidence-based approaches used for BFRBs, including Habit Reversal Training (HRT), CBT, and ACT. I wanted to take principles inspired by these approaches and turn them into something people could practice in their everyday lives.
And that became SoloUno 
Up-vote link - thank you!!
And sounds like you know the struggle firsthand like me.. Long dev sessions definitely seem to bring these habits out. Glad SoloUno resonated with you!