Problem-Solving Techniques
Eight practical problem-solving techniques — from the 5 Whys to fishbone diagrams and working backward — each with when to use it and a quick worked example. Pick the right tool for the problem in front of you.
No single technique fits every problem — the skill is choosing the right one. Below are eight practical problem-solving techniques, each with when to use it and a quick example. They slot into the five-step problem-solving process.
5 Whys
How it works: Ask "why?" about five times in a row, each answer feeding the next, until you reach the cause behind the symptom.
Example: "The line stopped → because the motor failed → because it overheated → because the filter was blocked → because maintenance was overdue." Fix the schedule, not the motor.
Fishbone (Ishikawa) diagram
How it works: Draw the problem as the "head" and branch out likely cause categories (people, process, materials, equipment), then fill in specifics.
Example: Late deliveries mapped across staffing, routing, supplier and vehicle causes — revealing several contributors at once.
Brainstorming
How it works: Generate as many ideas as possible without judging them, then evaluate afterwards. Quantity first.
Example: A team lists 20 ways to cut onboarding time before picking the three worth testing.
Root-cause analysis
How it works: Trace the chain of causes to the deepest one you can act on, rather than treating the visible effect.
Example: Repeated billing errors traced to one ambiguous field in a form, not to "careless staff".
Means-end analysis
How it works: Compare the current state with the goal, then repeatedly reduce the difference with sub-goals.
Example: Breaking "launch the product" into the nearest blocker, solving that, and repeating.
Working backward
How it works: Start from the desired outcome and reason back to the step that must come just before it.
Example: Planning an event by starting from the day itself and working back to today's first task.
SWOT analysis
How it works: List Strengths, Weaknesses, Opportunities and Threats to see an option in the round before deciding.
Example: Comparing two suppliers across internal strengths and external risks.
Pareto (80/20)
How it works: Find the small number of causes responsible for most of the impact and tackle those first.
Example: Fixing the two error types that cause 80% of support tickets.
Which technique should you use?
Reach for the 5 Whys when there is likely one clear cause, a fishbone diagram when there may be many, brainstorming when you need options, and working backward when the goal is clear but the path is unclear. For serious, recurring problems that need a documented fix, use the full 8D method. See the techniques applied in our worked examples.
Frequently asked questions
What are the main problem-solving techniques?
The most useful are the 5 Whys (find the root cause), fishbone/Ishikawa diagrams (map possible causes), brainstorming (generate options), means-end analysis, working backward, SWOT, and Pareto (focus on the vital few). Each suits a different kind of problem.
Which problem-solving technique is best?
There is no single best — it depends on the problem. Use the 5 Whys for a clear single cause, a fishbone diagram when there may be many causes, brainstorming when you need fresh options, and working backward when you know the goal but not the path.
What is the 5 Whys technique?
You ask "why?" repeatedly — usually about five times — each answer feeding the next question, until you reach the root cause rather than a symptom. It is quick, needs no tools, and works well for everyday problems.