How can I force myself to work on my life?

i have been depressed about my life for the last 3 years because of my dads death he died in 2016.

i dont brush my teeth i have a cavity plus i have plaque.
i quit my job 3 months ago i have not wanted to get a new on yet.
i have not taken a shower in at least 4 days.
i drink too much soda.
i never got my drivers drivers license.
i need to get my eyes rechecked

How can I force myself to work on my life?
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