So i know instruments need A TON OF PRACTICE but the problem with me is that i get bored too fast to play instruments. I've been practicing on my guitar now for 3 months but man i can only play it for 30 minutes tops and then i get seriously bored and start going on the computer. I can't help it either. I love how the guitar sounds and love it when people play the guitar but i just don't have the patience. I tried playing the sheets i was assigned for homework but i got really pissed off i couldn't get it. Then i was really close to smashing my guitar. I don't want to quit either though. I want to atleast be able to play the guitar decently. But it's really hard to concentrate and not lose patience. Does anybody have any idea how to remedy this problem? My other 2 passions are math and brazilian jiu jitsu but those are really different from guitar. They're short spurges of fun and you feel really good after solving a problem or rolling on the mats with a partner.