1. Connect with your why
Whilst getting a 'good boy' and a treat is undoubtedly satisfying it surely isn't the real reason behind why you do what you do. You need to regularly remind yourself of your deep motivation to prevent you from being pulled into praise seeking behaviours. You need to ask the 'why' question on a daily basis, I like using Steve Peter's 'Stone of Life' exercise.
2. Seek feedback over praise
If you can retune yourself to seek feedback over praise then you will not only take back control of the satisfaction from your work but you will also accelerate your progress. Feedback may not always be easy to swallow but it is invaluable if you have any kind of ambition. Rather than asking 'what did i do well' in search of some belly rubs, sideline the ego and ask 'what can i do better'.
3. Love the process
If we are eternally focused on an end product we are effectively confining our opportunities for happiness and satisfaction to those brief moments when we complete on something. By switching our focus to the process involved we open up a world of positive experience and fulfillment. To do this practice presence, switch from casting forward or back to give all your attention to exactly what you are doing in the moment. You can also match the challenge level of your task to your skill level. If you increase these two variables together you will find flow state and by experiencing flow you will very quickly begin to love the process.
Apply these simple steps and you will pull yourself out of the modern trend for praise seeking and back into a self motivated world where you no longer have to rely on others for your happiness. If this seems a daunting step then check out this excellent video by Ryan Holiday to motivate you to work for the sake of work.