Yes vigilance needs some effort and any effort can be tiring beyond a point. Besides points of resistances often remain hidden behind comfortable explanations and insincerities. Every sadhak has to face it. However the thrust of the sadhana is progress through everything including one’s resistances. It is like the judoka who knows how to use the opponents power to floor him. It is a certain tact that one learns whence everything is turned to feed the flame of aspiration and progress. Most important is a steady perseverance in the application of will regardless of failures and above all relying upon the Grace for the victory.
Affectionately
Alok da
Source
हमारा लक्ष्य अनोखा है (TH 318)
YT Link: https://youtu.be/gE6wXkNAIV4