Fire the doubters out of your life.
The heart must be kept tender and pliable; otherwise agnosticism converts to skepticism. In such a case, the value of apologetics is voided, for apologetics is aimed at persuading doubters, not at refuting the defiant. He who demands a kind of proof that the nature of the case renders impossible, is determined that no possible evidence shall convince him.
With such a deep rooted interest you can withstand the setbacks and failures, the days of drudgery, and the hard work that are always a part of any creative action. You can ignore the doubters and critics. You will then feel personally committed to solving the problem and will not rest until you do so.
Doubters do not achieve; skeptics do not contribute; cynics do not create.
I refuse to believe today will be just another day in my life. All that I am. All that I will become will be written through my thoughts and my actions. I've conditioned my mind. Trained my body. Sacrificed my soul. There will be obstacles. Doubters. Mistakes. But nothing comes to those who wait. Every champion was once a contender that refused to give up.
If you are going to make a change, don't go halfway. Make it with conviction and stick with your new idea. Ignore the scoffers. Remember, it is a law of nature that if something is different you're going to be taunted, jeered, and told the world is flat. Let the doubters fall off the edge.
You have to fight harder, dig deeper, and prove all the doubters wrongs.
It is the decisive people who have become civilised; it is the indecisive, otherwise called the higher sceptics, or the idealistic doubters, who have remained barbarians.
Intellectualism, though by no means confined to doubters, is often the sole piety of the skeptic.
You have haters everywhere, you have doubters everywhere. Just keep it moving, do what you do, do the best you can possibly do, and just be appreciative as the where you are and where God has taken you to.
I really get motivated when I have doubters.