If you're like most people, you allow thoughts to cross your mind all day long, giving them free reign to come and go as they please, usually without paying much, if any, attention to them. On a more serious note, you may not even be aware that your thoughts are affecting both your present and your future life. In other words, the kind of person you and I will become is determined by the kind of thoughts we think. For example, if you are constantly thinking negative thoughts about your job, you will soon become a chronic complainer about your job. If you are constantly thinking negative thoughts about your spouse, you will soon have trouble in your marriage.
Thoughts function like seeds.
They produce whatever is contained in them. Just as a pumpkin seed will produce a pumpkin, so will a negative thought seed produce a negative result. By the same token, a positive thought seed will produce a positive result. Here's a little test you can give yourself. Examine the relationships in your life.