Keep motivation to stick on one meditation practice :Ven. Mahasi Saydaw

Practice : Ven .Mahasi Sayadaw I have been practicing meditation " in daily life " for a week . I felt more relaxed and also noticed having a thought of "intention" before most of my actions of body . But now I feel that I'm losing the interest of doing mediation practice but to go back again on reading or listing to Dhamma talks .( mostly due to having the thought of finding a "better practice" ) And now I'm feeling the same delusion I had before and stress . I would like to to know how could I get my motivation back to stick with one method of meditation practice ?