I installed an adjustable television bracket into our bedroom. What I did when installing the bracket was installed some double sided velcro (long enough to go around television and bracket) behind the mounting plate. I push the television up against the wall and secure it there with the velcro. A couple of foam pieces tucked behind the television makes sure there is no movement.
"We were not placed on this earth to see through one another, but rather to see one another through!"
2013 Timber Ridge, 2013 GMC Sierra 6.2 L