* It was a time of surrender, seeking help from a source far greater than myself. (…far greater than I. It's not me or myself because the phrase means "far greater than I am great.")
* She gave the money to Maggie and myself. (Incorrect. You have not identified myself.)
* I like you better than I like myself. (This is correct because myself “reflects” or refers to the already-mentioned "I.")
Don't use a reflexive such as myself,
unless you have identified the person to whom myself refers.