"solid habit" is correct and usable in written English.
It is usually used to refer to a habit that is regularly practiced and helps someone achieve their goals. For example, "Developing a solid habit of studying every day helped me get good grades in school."
US based Vicki Davis (@coolcatteacher) claims it takes "rock-solid habits of mind and life to be the kind of self-assured Captain who can weather the storm".
The Russia Putin has inherited has not yet made the transition from authoritarianism to solid democratic habit.
Like quarterbacks Peyton Manning and Daunte Culpepper, also known for their solid work habits and smart heads, McNabb is the key to his team.
"It is the most powerful and moving celebration of students who achieved their goals, many under dire circumstances," says Flowers. "Recently our chancellor and other administrators have joined in this celebration and witnesses' testimony of how solid study habits, close-knit family support, and the 'othermothering' on campus help to motivate students while on their journey to graduation".
A heritage of solid food habits that are grounded in childhood facilitates the tightrope walk.
His posture isn't the greatest, but he's not a schlub: he's solid, with a habit of walking with his head down, like a race-car driver looking for his keys.
(I never stopped cringing at Solid Snake's habit of constantly hitting on all his co-workers, though).
Additionally, as youth begin to collect a steady paycheck, it's fitting to teach them about solid money management habits and how to make informed financial decisions.
Of course, we've seen this show before – in recent seasons, the Mets have made a habit of solid starts before faulting in the second half of the season.
All of the red cycles illustrate the behaviors of susceptible and infected computers when optimal control action is taken, while all of the blue solid lines present the habit of susceptible and infected computers when non-optimal control is taken.
