Everyone feels down, unmotivated, and demoralized at times. Not everyone experiences clinical depression. These are very different things, and it isn't just being lazy or making excuses.
People who are clinically depressed can often find it borderline impossible to accomplish even the most basic of tasks. Case in point: I took my cat of 17 years to the vet yesterday, so I could get a refill on her thyroid medication that she's been out of for...11 months now. 11 months of getting thinner, and weaker, and slowly wasting away, all because I couldn't find a way to get over the shame of letting it run out in the first place, or put together the nerve to actually make an appointment and keep it, because picking up the phone and dialing a number to talk to a person about time and schedules feels about as enjoyable to me as repeatedly ramming a pickaxe into my pre-molars.
11 months. That's how long it took for me to get past it. And this, even though I love my cat. She's one of the joys of my life, and she adores and trusts me completely. 11 months.
And even when I finally managed to get to that appointment yesterday, it was because my girlfriend called and made it for me.
I am depressed. This is what depression does. And so are you.