19-year-old Steven Sutton, of Burntwood in Staffordshire, died in his sleep today after fighting terminal cancer for four years. His fighting spirit and positivity during each stage of his struggle while alive have helped him leave behind an impressive legacy, one which will help teenagers in similar situations for a long time.

Steven was originally diagnosed at the age of 15 when a tumor in his bowel was detected. His prognosis worsened as the cancer metastasized and spread to his liver, lungs and knee. But rather than admit defeat, he composed a bucket list with 46 items on it and began working to accomplish his final goals.

Among those goals was the noble intention to raise £10,000 ($16,800) in donations to give to the Teenage Cancer Trust. To date, this goal has not only been reached, but has been vastly exceeded, to the tune of £3.2 million ($5.36 million).

Steven’s list included many other adventurous goals as well. He wanted to go skydiving, he wanted a tattoo and to play drums in front a large group of people. He steadfastly plugged away at each item while undergoing seven major surgeries and four rounds of chemotherapy and radiation in just three short years.

His efforts to raise money really kicked off in April of this year, after he posted a picture of himself giving a thumbs up as means of farewell on Facebook. This photo, and his previous efforts, garnered attention from social media and celebrities such as Jason Manford, Jimmy Carr and Ricky Gervais. He was even visited by Prime Minister David Cameron, who said Steven was “absolutely inspiring.”

Following the announcement of his death, donations to the Teenage Cancer Trust once again picked up speed, netting £60,000 in a little more than two hours.

According to a representative from the Teenage Cancer Trust, Steven’s donation is the biggest they have ever gotten. They plan on using the funds to provide support to teenagers fighting cancer across the country.

More than 135,000 people have contributed to the donation through the site Steven started to raise funds.

Steven left a message on Facebook in which he expressed his overwhelming gratitude for the support of so many willing to help him reach his fundraising goals. “Thank you from me, and also thank you from every young cancer patient in the future who will benefit invaluably from the money raised, “ he said.