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From Foundation to Impact: A 120 Day Transition Log

  • Writer: Joon Han
    Joon Han
  • Feb 28
  • 3 min read

One hundred and twenty days ago, I stepped away from my role in the medical setting to begin a deliberate build phase in digital analytics.

At the start, I did not have a clear direction. I spent the first few weeks exploring where my skills could translate and where they could grow. It was uncomfortable not having certainty.

I had no commercial proof. No visibility. No roadmap.

So instead of waiting to feel ready, I started building.

I built this portfolio. I completed targeted certifications. I developed independent case studies using real datasets.

It was not a break. It was structured development. What Was Built in 120 Days

To make this tangible, here is a snapshot of the portfolio architecture and selected projects developed during this 120-day cycle. During this phase, I prioritised output over passive learning.

In 120 days, I:

  • Built and published a live portfolio site

  • Developed three independent case studies using SQL, GA4 datasets, and public data

  • Completed certifications aligned with marketing analytics and data analysis

  • Practiced querying and transforming datasets using BigQuery

  • Designed dashboards to translate data into structured insight

  • Documented the transition process publicly through writing

None of this was done for activity alone. Each project moved me from understanding concepts to applying them in practical scenarios.

The focus shifted from learning to shipping. The Reality of the Market

The market is competitive, and it should be.

Technical learning is accessible to everyone. Courses, certifications, and tutorials are no longer rare. What differentiates candidates is not exposure to tools, but the ability to create value with them.

Employers are not hiring for effort. They are hiring for contribution.

That shift in perspective changed how I approached this transition.

Instead of collecting credentials, I focused on producing work that demonstrates thinking, structure, and measurable output. Each case study was built to answer a practical question, not just to display technical steps.

I am still building commercial experience, but I understand the expectation. Results matter. Clarity matters. The ability to operate under constraints matters.

Progress at this stage is not loud. It compounds through deliberate practice and applied execution. The March Pivot: From Learning to Impact

The first 120 days focused on building foundations. The next phase is about applied impact.

For March, I am shifting from learning in isolation to balancing technical development with commercial experience.

  • Power BII am working toward the Microsoft Power BI Data Analyst Professional Certificate to strengthen data modelling and dashboard design.

  • Commercial testingI am practising with Kaggle e commerce competitions and Google Analytics public datasets to simulate higher traffic environments and real constraints.

  • Real world projectsI am seeking volunteer analytics and growth challenges where I can deliver measurable outcomes under deadlines.

The goal now is not just skill accumulation. It is capability under pressure. What Changed

At the beginning of this transition, my positioning was simple. I was a professional shifting fields.

That framing was incomplete.

What I am building is not just a new skillset, but a way of thinking. Clinical precision applied to digital problems. Structured experimentation instead of guesswork. Measured iteration instead of random motion.

The tools are new. The discipline is not. A Note for Anyone in Transition

One hundred and twenty days ago I was in your shoes, and I know it is not an easy road.

When you are starting something new, progress rarely feels dramatic. It feels slow. It feels uncertain. It feels like effort without immediate validation.

There were days I questioned whether I was building fast enough. Whether the shift made sense. Whether I was behind.

What helped was simple. I stopped waiting to feel ready and started working with what I had.

Small projects. Imperfect drafts. Public experiments.

Momentum did not arrive all at once. It accumulated.

If you are in the middle of your own transition, you do not need permission to begin. You do not need a perfect plan. You need consistency.

This 120 day cycle is not proof that I have arrived. It is proof that steady building changes direction.

For now, that is enough.

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