(CNN) Just 10 days after checking into rehab, Bam Margera has decided to leave treatment.

The former MTV "Jackass" star took to Instagram on Thursday to share a series of handwritten notes in which he explained why he left.

"In rehab I am bored 50 percent of the time so that's when I figured out that when boredom sets in and alcohol is off limits that's when I get creative as f***, an explosion of good ideas, exercise, skate, workout, yoga, hike, bike way more. Because I don't sit stagnant."

Margera also wrote that he had relapsed over the summer after being held at gunpoint.

When he entered treatment earlier this month , Magera shared the news on social media.

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