If you've mistakenly typed "optism" instead of the correct spelling, "optimism", don't worry; it happens to the best of us! Here are some suggestions to help you avoid this error in the future: 1. Double-check your spelling using a reliable online dictionary. 2. Use auto-correction tools or spell-checkers to spot and correct misspellings. 3. Try to be mindful of the correct spelling and practice using it regularly.