The key advice for any Data Analysis project is to never start any analysis without first having a structured plan.
You should set your goals and they should be S.M.A.R.T
Below are the two charts to help with Analysis.
This is part of Data Visualization and Communication with Tableau by Duke University on Coursera.
Set your S.M.A.R.T Goal for the project
Have your Structured Pyramid Analysis Plan
structured-pyramid-analysis-plan
This will guide and make your work clearer in your mind as you analyse along. It also serves as a map so you know what you are really working on in the thick of the analysis and let you know where you are and where you are going.