how to reduce stress in reading or examine thesis?

Thesis is a final product of research project for Bachelor, Masters or PhD Degrees. In the process of producing this final product, a lot of stress for the students, supervisors and may be the examiners of the thesis.

How to reduce the stress?
may be we need a good and committed students, good systems, supervisors, environment, facilities and leadership.
Or ask cats to help! train cats first.