DOE suitibilty question

Hello, I am currently in process of a job with DOE and they have a Human Reliability Program. I read about it ,and it is basically suitibilty process. How likely is to be cleared for this? It is a Q clearance but you have to go through this before your even process for a Q clearance. I currently have a Secret with DoD contactor.

DOE HRP mirrors requirements for Public Trust/National Security positions across the rest of the government but is tailored to those with potential exposure to nuclear information. Go here to learn more:

A Q clearance is a prerequisite for HRP. Getting HRP involves medical tests, psych tests, drug tests. Basically ensuring that you’re stable enough to be trusted around certain materials.

Seems like it is the toughest suitibilty of them all.