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to one's heart's content; as much as one wants; as hard as one can; with all one's strength; to the best of one's ability; to the utmost; with determination; hard; heavily
resolution; decisiveness; determination; resignation
思い切り叫んでストレス発散した。
I relieved stress by screaming at the top of my lungs.
ストレス発散のため思い切り走ると気持ちがいい。
It feels good to run with all your might.
人生は一度きりだから思い切り楽しむことが大切だ。
It's important to enjoy yourself to the fullest.