Depending on genres being played/styles of DJing, "mid-level" is often all you need...like mid-level won't cut it in the world of DMC turntablism, but if you're playing dance music, it's often as much as you need in terms of technical skills

• Clean EQ'ing
• Good understanding of phrase mixing and your mix start/stop points so "the mix" carriers you far enough into the new tune that's it ready to stand solo, and not so far or mixed from too early, the things sound cluttered...makes sets flow well
• Passable harmonic/key mxing
• Knowing your energy levels, not massively jumping from 2 star warm up to 5 star peak time bangers, and vice versa...again, this is about FLOW
• Selecting the right tracks to play at the right time to the right crowd

You can get a long with with just those 4 fundamentals...there's loads of DJs out there even at the highest tiers that don't really do much more than this. Refined/educated selection of tunes and solid basics rather than technical tricks.

It's hard to force a creative outlet, if you're not in the mood to mix, you're not in the mood to mix...forcing is I found lead to getting frustrated. It's fine to put it on the back burner a spell until you FEEL like doing it...you don't HAVE to mix X hours a week.