Build a blog guiding people to have a practical and rational perspective. Provide practical tips for everyday productivity. Teach people to analyze common challenges and find pragmatic solutions that can be easily implemented. Help other set achievable goals in life as well as in personal finance, ambition, self-improvement etc.
Also include self-help topics such as efficient time management, decision making, critical thinking, parenting etc. This blog idea can cover a very wide range of topics and you should concentrate on what you are best at.
Blog Name Idea: PragmaticState.com