The morning and evening adhkar are the two anchors of a believer's day — a few minutes each that guard the hours between them.
Start with three: Ayat al-Kursi after every prayer, the three Quls morning and evening, and "SubhanAllahi wa bihamdihi" a hundred times. Add more as the habit settles.
The digital tasbih on this site keeps the count for you, so the heart can focus on the meaning instead of the maths. Remember Allah, and He remembers you.