How to Be Preservered From a Wandering Heart

From the Saint's Everlasting Rest:
Our chief work here is to discover the danger, and that will direct to the fittest remedy. The heart will prove the greatest hinderance in this heavenly employment; either, by backwardness to it;--or, by trifling in it;--or by frequent excursions to other objects;--or, by abruptly ending the work before it is well begun. As you value the comfort of this work, these dangerous evils must be faithfully resisted. 1. Thou wilt find thy heart as backward to this, I think, as to any work in the world. O what excuses will it make!