How do I deal with frustration when fixing the problem takes so long?

You see the harm clearly, you know the fix, and yet the science and the timelines will not let it happen any faster than they allow. That gap, between the damage in front of you and the slow pace of the remedy, is a real frustration. It comes from caring about the outcome, which is exactly why you are in this work. But frustration aimed at the pace of nature is aimed at something that will never yield to it. Contamination moves by physics, remediation takes the time it takes, and no amount of urgency in your chest changes the chemistry. The frustration does not speed the fix. It just burns you, and a burned-out person helps the problem less, not more. So separate the urgency from the impatience. Let the urgency drive the diligence of your work, the part you control. Let the impatience go, because it is quarreling with reality. Focus on doing your piece well and on time, and trust that real, slow progress is still progress. The harm is real, but so is the fix, even when it moves slower than your heart wants.