On a side note, I personally think it is a wise thing to check our hearts. I know from experience, that if I ignore my inner thought life, my thinking can go askew. Unhealthy thinking can fester and before long our thought life can do downhill. If you are struggling, confide in someone that has a listening ear, and that can offer you sound counsel.
For as the rain and the snow come down from heaven, And do not return there without watering the earth, And making it bear and sprout , And furnishing seed to the sower and bread to the eater; So shall My word be which goes forth from My mouth; It shall not return to Me empty, Without accomplishing what I desire, And without succeeding in the matter for which I sent it.
Isaiah 55: 10-11