Sometimes I find it really difficult to actually start painting some models, even though I have a bajillion to paint. The large quantity is daunting at times, but I find that once I get started, that's all the impetus I need to keep going until the job is done.
I've just finished another 3 models for my Pan-O faction for Infinity though. They are a bit rough and I *could* do better if I wanted to, but I didn't, so they are at a level I'm happy with.
I'm now working on some more Space Marine vehicles.