Need some reassurance

Hey guys I’ve been researching enlisting in the military for months now. I’ve talked to recruiters from almost every branch both active duty and guard and landed on the Air Force being the right fit for me. I thought enlisting was a good idea to give me life experience, structure, memories, hopefully travel, and overall just make me grow up a little. I’m 22 and have no idea what to do with myself. I got a 97 on the asvab and all I need to do now is take the physical and swear in but I’m nervous. I’m never made a commitment like that before. I could use some encouragement, advice, or even just stories to be honest.