Don't listen to advice on the internet and think about the situation you're in, it's always individual. Advice from the internet will always paint in big strokes.

But also regarding code: If you think you will need it later, you probably won't. Build simple and don't overengineer. Chance is, you do it even though you think you don't. If it overgeneralizes something because you think it might be a requirement in two weeks, do it when the need arises, not now.