Noun
wholeheartedness (uncountable)
the condition of being wholehearted
Enthusiasm is the best protection in any situation. Wholeheartedness is contagious. Give yourself, if you wish to get others. David Seabury
“Here's what is truly at the heart of wholeheartedness: Worthy now, not if, not when, we're worthy of love and belonging now. Source: Internet
That way happiness and wholeheartedness lies. Source: Internet