How do you get someone out of depression?

there was a while that i was really having a hard time in my life and i just wanted to give up. i stayed in my house never went to see friends never called anyone or answered the phone...till my best guy friend ever just showed up at my door. asked to come in and we talked for a long time. i just needed someone to actually listen and help me. he asked me how long i planned on sitting around being depressed. asked if i really wanted to get better and if i did i needed to get up go out and live my life. it sounds so simple but he just had to push me a little and help me to realize that i had it within me to change my life. honestly i dont know what i would have done without him. he made me get ready while he waited and we went out. i dont remember where now but it was lunch or something. spent the day talking and not worrying and i realized that everything would be fine i just needed a kick in the a**. i hope you are close enough with your friend that you can be that person to encourage them to open up and heal and want to be strong for no one but themselves