I think you have it a bit backwards. You perceive reality through your consciousness. So if your consciousness were to interject a filter of its own choosing, your subjective reality would be affected. However, this has no bearing on objective reality. You can't will bad things to not happen, but you can choose to perceive them as less bad.

It's like writing a SQL query "SELECT name, MIN(51, objectiveScore) as subjectiveScore FROM TestResults" and then say "hey look, no one failed!". The data in the table is still going to have any sub-50 scores it originally did, you've just turned a blind eye to them.