Does anxiety affect drive?

Im 18 and recently i quit smoking 2 weeks ago. ive had anxiety problems for a little more than a month on and off mixed in with a weird short depression of about two weeks after i quit smokin. now the depression is gone, anxieties still there from time to time. Do i have an anxiety disorder? and also i know depression can affect drive but why hasnt it kicked back in yet after a week of bein not depressed. This has never happened to me before in my life and its really important to get my drive back. what is wrong with me and how can i fix it?