Hey Glow. I haven't been feeling as blah and depressed lately, but I find for me its easier to "combat" it by praying, keeping myself busy (whether by reading, singing (in my head, not out loud) and doing homework), and singing the Mark Roger's song "Wait On the LORD, And Be Of Good Courage".
Its really, really, REALLY important that you don't let being depressed rule your life. If you do, it essentially becomes your idol. "For God hath not given us the spirit of fear; but of power, and of love, and of a sound mind." (2 Timothy 1:7)
Spurgeon even struggled with depression. On this site called Chapel Library, where all the booklets are free, there's one called Anguish and Agonies of Spurgeon.
[https://www.chapellibrary.org/literature/title-catalog?fldTitle=spurgeon] This is just the search I did, but the book is on the second row.
Heh. Wow. Hopefully that helps, and here is a Spurgeon quote to close out this lengthy reading. Or two.
"I find myself frequently depressed - perhaps more so than any other person here. And I find no better cure for that depression than to trust in the Lord with all my heart, and seek to realize afresh the power of the peace-speaking blood of Jesus, and His infinite love in dying upon the cross to put away all my transgressions."
"I know, perhaps as well as anyone, what depression means, and what it is to feel myself sinking lower and lower. Yet at the worst, when I reach the lowest depths, I have an inward peace which no pain or depression can in the least disturb. Trusting in Jesus Christ my Savior, there is still a blessed quietness in the deep caverns of my soul."