Bad day

It's really challenging to remain optimistic at times, especially when things are long and stressful. It's ok to feel negative at times. It's normal. I'm am glad to see that you do have hope for tomorrow to be better. That's optimistism right there, especially that you do realize that things are changing for the better. It's scary because it's change and with change is that there is uncertainty and you do not know what to expect. Keeping the positive faith will help you through this stress and uncertainty.