Sharing startup journey, how we developed cnick - payment ring

Everyone knows how difficult it is to develop a startup. About 90% of the startup companies fail and if we talk about hardware startups it's even higher rate.
I will talk about how we survived and managed to develop without investors, with the profit generated from product sales.
We started cnick in 2016 in Tbilisi, Georgia during our student years. We developed product and in-house manufacturing from scratch and started selling our product globally.
We have overcome lots of challenges and almost gave up but we stood up and never stopped fighting for realizing our vision.