That's great for anyone, especially a 21 year old! 
Congratulations!!
@Anonymous wrote:I'm 21, so my credit history is a short tale. Started with a Capital One Secured Mastercard when I turned 18, Discover It a couple months later, closed my Capital One card, got a Chase Freedom almost two years ago. Now I applied for Chase Freedom Unlimited and was instantly approved for a $4K CL. I wonder what my next card will be? I'll find out next year...
Congratulations to you!...Thanks for sharing.
Congrats on your approval!!!
Thank you for the support, guys! Managing credit is fun for me - I began planning my credit debut months before I turned 18. Like @joeaseer said: "Success happens quick when you're self-disciplined."
@joeaseer wrote:I would suggest that you ask Discover for a CLI on your Discover IT card. I'm sure they'll give you another $1k at least without a HP since you've been with them so long. Congrats on your credit journey. I didn't trust credit cards for years and I just started to understand about them December 2014. Success happens quick when your self-disciplined.
@joeaseer: What a good idea! I wasn't even aware that some companies (e.g. Discover) did CLIs without a hard pull. I just called them and they increased my CL by $1,500, so now my Discover It is at $3,500. Thank you for the tip!