We are all scared int he beginning and I'm pretty sure we are all scared leading up to each and every PCR test, except Scuba maybe surprise. I am now 26 months post Dx and on 150mg/day Tasigna following 3 successive dose reductions in months 3 - 9 of treatment due to multiple nasty side effects. I was lucky enough to have very rapid response to Tasigna thus allowing my onc to agree to the dose reductions - I was MMR in less than 90 days and have been at <.003% since April 2017. Like Scuba, I now have my PCR test every 6 months.
The mental part is tough, but it gets better as you slowly realize that this disease is manageable and that you can lead an almost normal life. What helped me was all the stuff Scuba mentioned plus never stopping my cardio and weight workouts, despite feeling like utter crap many many days. Because of all the dose reductions, I was getting PCR's done every 6 weeks for almost a year and waiting for those was always tough, so my wife and I would plan a fun day on the day we knew we would get the result in an effort to keep my mind otherwise occupied. I listened to relaxation tapes and spent lots of time on this and other support groups which not only increased my knowledge significantly but also gave me a place to share and vent.
It'll get better. We are a very lucky subgroup of a larger group of very unlucky people with blood cancer. I do therapy visits to Mayo Clinic with my dog MJ once a week and we go to the radiation oncology and chemotherapy departments. Yesterday, MJ and I met a young man in his 30's with what is now terminal lymphoma. He had been through almost every therapy possible, including CAR-t at Moffitt in Tampa and it keeps coming back in a more aggressive form. He has been advised to go to hospice, but he refuses as that would be tantamount to giving up hope. I left that encounter feeling incredible grateful that I have CML.
So hang in there, don't miss any doses, follow the fasting rules for Tasigna religiously, exercise vigorously, focus on good nutrition, and do anything and everything else possible to keep your immune system healthy. You have a long life ahead of you my friend - enjoy it. The mental part will get easier.