I was on a roll last week and the week before. This week, not so much. I am so bummed because I have all this new stuff and no ideas!! The card class I am taking isn't helping me either. The challenge colors are so difficult to work with. I have literally thrown away at least 5 completed cards because I hate how they came out. That is not like me!!
Or decide which colour is your problem, and take it out. Personally I find yellow switches me off. If I have to use yellow, I tend to cover most if it up, or disguise it somehow. Things were easier after I worked that out.
Or maybe it's the whole palette? Sometimes - often - the designers break the rules by mixing the seasons' colours together. You can get away with mixing spring and autumn because they are both warm, or winter and summer because they are both cool, but when they try to mix cool with warm, it feels very unsatisfactory. See if there's a rogue colour or two in your new stuff that you can eliminate, or separate them yourself?