My marks are really bad and I need to get my act together (2nd year uni)

This is my second year at uni and my marks are really bad, this is the first time in my life where I've struggled in school. In my first year, I did really well, but now I'm getting D's and F's (even my subjects that I'm used to taking aren't going well). I feel so unmotivated after getting bad marks and I feel like I've lost all my motivation to get out of this rut, but I need to. I was really consistent with my studying last year, but I'm not really sure what's wrong with me this time. I'm just really stuck and this is the first time in my life where I've felt like I've let myself down so much.<br><br>I'd like some tips on how to stay motivated and get my marks back on track, this is really important for me as I'm getting close to having to do my licensure examination. I'm really stuck, I don't know what else to do and this is getting me down.<br><br>Please help, this is really important for me!! :'(