When a monk is an arahant, with his fermentations ended - one who has reached fulfillment, done the task, laid down the burden, attained the true goal, totally destroyed the fetter of becoming, and is released through right gnosis - the thought doesn't occur to him that 'There is someone better than me,' or 'There is someone equal to me,' or 'There is someone worse than me.'
Gautama BuddhaThe mind is pure and luminous by nature. It is defiled only by adventitious thoughts and emotions
Gautama BuddhaPeace comes from within. Do not seek it without. It can be argued that peace and happiness comes from the subjective internalised perspective of realizing things could be worse and being grateful they aren't. The alternative view that peace and happiness comes from the objective external perspective of having more and better things than at present, while important for growth, can be a never-ending source of jealousy, dissatisfaction and disappointment. A balance of the two, where people are grateful for what they have while striving for more seems the best blended perspective.
Gautama Buddha