Besides simplicity and purity, you should understand that there is no need to search for specially strict practices to take upon yourself. Such practices are not part of serving God. It was given to men of flesh and blood. These exaggerated practices can put you off completely. The greatest wisdom of all is not to be wise at all.
Sophistication can be very harmful.
Thinkers are easily trapped in their own wisdom. Keep well away from the wisdom of those self important people who believe they know great truths about serving God. Their wisdom is nothing but foolishness. All their sophistication is quite unnecessary in serving God. The main thing is to be pure and simple a nd to have pure faith in God and His Tzaddikim.