What truly brought you nearer to Allah?

Salam alaikum! We all have times when our faith is high and times when it dips. I want to know-what's one habit, insight, book, dua, or change that really helped you get closer to Allah? Maybe it was praying on time, reading Quran every day, giving up a sin, doing dhikr, or just thinking more. What had the biggest impact for you?