Totally learning from mistakes every week! I think it's really important not to stress too much though because the more fab other outfits get, the more hyper-critical you might get over a ho-hum day.
This outfit may not be your favorite, but it's no crime, either! like the teal with the brown. I am not as keen on the white shirt with the 2 darker colors, probably because there's nothing else to tie all 3 colors/tones together or bookend the white shirt or anything. I would probably wear something like this with a darker shirt, to go more tonal, a print with colors of the other 2 pieces and some of the orange or purple, anything to spice it up. or a scarf that covers the lighter shirt. With a more monochromatic tone in a blouse, you could button or unbutton the cardigan. Or if you kept the white shirt look, then something to play it up elsewhere in the outfit. For example--is it a long-sleeved shirt with cuffs? Have you tried turning the cuffs back over the sweater sleeves and scrunching? That puts some more white elsewhere in the outfit and looks more sassy as well.
What is your style direction here? Are you not as happy with the colors/patterns, or did you want a more structured look (fitted jacket, say), or just something unexpected?