Definitions: (1) constant, firm, persevering, or determined; tenacious; (2) resolutely supportive; faithful, loyal

• He always stands by his decisions: what is right is right, even if it hurts or later turns out to be wrong. — Nina George (1973-) The Little Paris Bookshop {2013}
• The rewards of tomorrow are safely hidden in the belief of never quitting and not giving up on yourself today. ― Johnnie Dent Jr. (~1960-) American author

Observation: Antidotes to Disappointment
• A sense of humor
• Faith in what you are doing
• Learning from information given
• Adjusting your plan to circumstances

Inspiration: Terry Fox (1958-1981) ran 3,339 miles across Canada in 1980 raising $25 million for cancer research, even though he had one artificial leg lost to cancer. — Ann Donegan Johnson, The Value of Facing a Challenge: The Story of Terry Fox {1983}