This is the mantra I use to welcome repeated task and project failure as easy as anything else.
Maybe its just me but it seems like repeated failure is required to succeed at anything.
Getting to the point where you consider yourself mostly a success (in an immaterial sense) requires repeated failure too - and its never really over - but its a success that I believe gives to all others.
Succeeding at tasks and projects mostly requires failing a lot and objectively examining the failures. The least self-actualized people that I know are too afraid to fail so they avoid admitting they've caused their failures and imagine they've succeeded more than they have. They're only guilty of avoiding pain but they're creating more of it in process.
Nothing makes moment to moment failure easier than knowing you're ultimately succeeding at something that really matters.