God is almighty so leave the outcome
(success or failure) to Him / Her / It.
A Tāmasic person does not carry out his duties because of ignorance or laziness.
A Rājasic individual does not perform his duties because of fear of the outcome or if the task is unpleasant or difficult.
A Sātvic person carries out all his duties without selfish desire for personal gain and without fear of the outcome and difficulty of the task.
Bhagawad Gitā XVIII.9-10
Food and drink play a very important role in maintaining our health and a healthy body is essential for performing all our duties ( Dharma).
शरीरं आ ं खलु साधनम् ।