by Matt HoganArchives, Motivational Quotes “Mental toughness is persistence not intensity.”James Clear, Blog Share this:Tags:Grit QuotesJames Clear QuotesMental Toughness QuotesPerseverance QuotesPersistence QuotesQuotes about Being ToughStrength Quotes previousFor all those going through hell:next32 No Bullsh*t Mark Manson Quotes from The Subtle Art of Not Giving a F*ck