I have always tried to start each day with what I believed was optimism regardless of how bleak things looked the evening before.
Whilst deciding on my topic for the letter O in the A to Z challenge I looked up the definition for the word optimism and this was the result of my search
hopefulness and confidence about the future or the successful outcome of something:
I had always associated optimism with hopefulness but not with total confidence; quite confident or fairly confident yes but not totally confident so I looked up definitions for hopefulness
feeling or inspiring optimism about a future event:
and confidence
the feeling or belief that one can rely on someone or something; firm trust:
Looking at the three definitions together it appears to me that when I am hopeful I must also have confidence; all that time I thought I had optimism it seems that I did not so, in future, I shall just make the most of every day as it says at the top of my blog and stop trying to define my approach to life in a single word, although I must say I do think I am objective ………………….
lynnerevettebutler 
Things that seem nearly insurmountable at night often seem more resolvable in the morning -perhaps our subconscious works on it overnight or perhaps our optimism/hopefulness/confidence returns with the new day.