Before I proceed; I want to iterate that anything after this is not to be seen as an adequate replacement for seeking individual, clinical mental health treatment. While I am a licensed, independent mental health therapist this piece is to be considered a support/resource...not treatment.
Depression isn't just what we see depicted mainstream. There are many signs of depression ranging from: extreme sluggishness to anger outbursts. Additional signs include: persistent sadness, insomnia, irritability, social isolation, inattentiveness, anger outbursts, loss of interest in things you usually like doing, feelings of worthlessness, and suicidal thoughts (ranging from mild to severe thoughts of self harm). There are many ways to address depression... from making intentional efforts to implement healthier lifestyle habits like exercise (which happens to be a non medicinal depression coping technique)...to reaching out to a therapist or life coach... to managing it medically through your primary care provider or psychiatric professional. It is not smart to self diagnose. If you are concerned that you may be exhibiting signs of depression, you should connect with a professional who specializes in treating mental health/emotional issues. There are tell-tale signs of depression; but please keep in mind that exhibiting "signs of depression" do not necessarily mean that you HAVE clinical depression. Again, it is very important that one does NOT self-diagnose, because doing so can lead to negative consequences. A good place to start if you're concerned with potential depressive symptoms is your primary care provider. After a brief assessment, he/she will refer out to a mental health provider accordingly. Don't be afraid to talk to somebody, if you suspect you may be dealing with significant mental/emotional issues talked to a loved one and/or professional for help. Go to the "Resources" tab on site and check out the mental health resources for additional help. I'm pulling for you.