I would say try not to focus too hard on the daily quest. You have 24 hours to do it. Instead. Focus on winning, getting earnings. Learn from your mistakes (losses) and in the process you will learn to play matches where you have a better chance of winning. If you only focus on one splinter, other players can pick up on that and possibly play easy counters for your deck.
Over time you will finish the quest but may have possibly put yourself in a better position rank wise, earnings wise or whatever.
Posted using Splintertalk