DI isn't really a standalone skill you can drill in isolation the way the question implies. It's applied Quant and Verbal. The Data Insights section recombines the same math, logic, and reading skills from the other two sections and dresses them up in data-heavy formats: tables, graphs, multi-source prompts, and two-part problems. So, when DI is your weakest area, it's usually pointing at one of two things.
The first is that your underlying Quant and Verbal aren't as solid as they need to be, and DI is exposing those gaps. A Graphics Interpretation question built on percent change will sink you if percent change isn't automatic. An MSR question is really a reading-and-inference problem, which is straight Verbal. If that's what's going on, no amount of DI-specific practice fixes it. The lever is mastering the Quant and Verbal content.
The second is that your foundation is fine, but you aren't fluent with the DI question types and how they present information. That does call for dedicated DI practice, aimed at learning each question type's structure and approach rather than grinding volume.
Figuring out which one is true is the whole game. Work DI questions untimed, get your accuracy up, and analyze every miss honestly: a Quant or Verbal concept you didn't actually know, a misread of the data, a careless error, or a trap answer. The pattern tells you whether you have a content problem or a familiarity problem.
For the practice itself, the best material is official: the questions on mba.com and the Official Guide Data Insights Review. GMAT Club's DI forum is useful for working problems and reading explanations too. But I'd gently push back on hunting for DI resources as the first move. After several attempts at a plateau, the real question is usually whether your prep has been comprehensive and structured across all three sections or piecemeal. A topic-by-topic approach that builds Quant and Verbal to mastery, then layers DI on top, is what tends to break a plateau like this.
So, here's what I recommend: Before stacking up DI sets, be honest about whether your Quant and Verbal are genuinely strong. If there are gaps, close those first, since that will lift DI more than any DI drill. Then practice DI with official material, untimed at first, reviewing every miss for its root cause, and add timing only once your accuracy is consistently high.
This article walks through how to approach DI prep in more detail:
How to Prepare for GMAT Data Insights.
thundercalypso
I have taken the GMAT multiple times, but cant seem to break the barrier of 700 points. I think DI is the area I struggle the most with. What are the best resources to practice DI