How do you self-motivate? (Page 3 of 3)

I've read all the answers here, and there has been a lot of helpful stuff here.  The resounding majority of you vouch for exercise.  As chance may have it, I have started exercising and eating better lately.  My body doesn't feel too bad, (with the exception of after leg day, ouch). 

I can say deadlines have helped me in the past.  When I was in school, I was creating like crazy.  I have set some deadlines for myself with my album, but I've broken them.  I've even made a public announcement, but I broke it.  I just can't get myself to feel like I'm good enough.  It's never done, and my music always sucks compared to others' that I listen to.  I know I'm not that bad, but I can't turn off my self depreciating criticism.  I released 3 of the songs and they even got played on a local college chip radio show.  I was super excited.  Then my sister told me her friend listened and loved them but wanted to mix them for me with more bass.  So then it kicked in.  "They're not good enough.  I have to have my bass sound like Kubbi."  Now what I was proud of turned to shit in an instant.  I couldn't get it to sound right, and I gave up.  I haven't worked on it much since.  I have 9 completed songs that I am sitting on.  I know it's totally ridiculous.  Maybe you guys could help me.  I'm gonna post the title track here.  Tell me what it needs.  Give me a deadline (within reason), and I will keep to it this time.  I think it could make me very much happier if I could feel like I've created something I'm proud of.

This is the title track, Odyssey. 
https://soundcloud.com/krubbz/odyssey

I used to be able to translate my negativity to music and poetry.  And creating that would keep me going.  As bad as were the muses that brought about the things I wrote, the creation made me proud.  I can't seem to do this anymore.  This is different.  It's hard to know how to explain it without it being TMI, but a lot of really bad things have happened in my life in the past 6 months.  And I'm talking people dying bad, not, like, ripped my favorite shirt bad.  I'd be happy if I could even get back to my normal cynical, realist sort of negativity/depression.  I'm pretty low.  I'm trying, but this is why I need this.  And I thank you all so much for your responses. 

I am going to use many of the things I've read here.  I'll likely use the gradual daily small goals to get me back into it and the deadline to help me finally finish.  And I'll keep exercising.  I'm also seeking help.  And I hope any of you who are out there who mentioned struggling with depression or anxiety will do the same.  Even if it seems manageable, look into it.  You won't know what it's keeping you from accomplishing until you become aware later on of how much it's affected you and you look back.  The regret feels awful.  Don't let yourself get to that point.  Take care of it now.  There are a lot of options out there, and many counseling centers have sliding pay scales that let you pay based off of your income.  Please do it.