An overloaded week is rarely a discipline problem. It is usually a structural one - too many open commitments, no order of priority, and a calendar that records meetings but not the work those meetings created. A good time management course does not make you try harder; it hands you a system that decides for you, which is the part willpower was never going to cover.
The courses below each own one stage of that rebuild. Taken in order, they read as four steps rather than six separate purchases.
Skip step one and everything after it is guesswork. It is also the step people most want to skip, because a week of honest tracking is uncomfortable reading.

Six well-reviewed options covering the whole arc, listed in the productivity course catalogue.
Written for the state most people are in when they go looking - already behind, already tired. It starts with triage rather than optimisation, which is the right order when the week is already on fire.
The prioritisation course of the set. It treats deciding what not to do as the core skill, which is exactly step two, and it gives you a repeatable way to rank work instead of reacting to whoever asked last.
Broader and more systematic, covering planning, scheduling and review as one loop. A sensible single purchase if you would rather build the whole thing at once than assemble it from pieces.
Heavier on method and frameworks. It suits people who have read the popular productivity books, adopted three systems and abandoned all of them, because it spends time on why systems fail rather than only on how they work.
The most comprehensive of the six and the longest commitment. Worth it if you are rebuilding properly rather than patching, and if you have the weeks to apply it as you go.
Execution-focused and deliberately practical. Good as a second course once the planning side is settled and the remaining problem is that the plan keeps not happening.
Apply one change at a time. Adopting a full methodology in a single weekend is how people end up with a beautifully organised system they abandon by Thursday. Take the prioritisation rule from a personal productivity course, run it for two weeks, and only then add the next piece.
Book a weekly review and treat it like a meeting someone else called. Every system in every one of these courses depends on a regular review, and it is the first thing to fall off when the week gets busy - which is precisely when it is doing the most work.
Pick the shortest course that covers your gap rather than the most thorough one available. A twelve-hour programme abandoned at hour three teaches nothing, and most of these courses front-load the material that changes your week anyway.
Expect the first fortnight to feel slower. You are adding planning overhead before the savings arrive, and plenty of people quit in that window and conclude the method does not work. It does; the payback is just on the far side of the setup.
Start with the course that matches your actual situation rather than the one with the broadest promise. If the week is already unmanageable, triage first and optimise later. If the problem is a plan that never survives Tuesday, buy for execution. These courses are only worth the hours if one of them gets applied properly rather than all of them watched.
All six are available on Udemy, so you can enrol in the time management class that matches your situation and start the next working week with it.
Practical work and focus pieces go up regularly on OrganizeTrip - drop in when a routine needs resetting.