The Power of Your Subconscious Mind- by Joseph Murphy was published in 1963 but till date it has not gone out of print. I can suggest you so many books but if you have ever felt bad and de-motivated then it is one of the best book. I have read it more than 3 times and i'll say it is the one of the inspirational guide to remove your mental blocks, fear and to achieve your goals. This book is available at amazon at discounted price, just go and purchase. remember 3 years back i was not like this, my heart and mind was full of dreams and i was so excited to achieve them but with time my excitement and my dreams were fading and i don't know why. But yes reading helps you and your books are the healer. Once i read somewhere about the law of attraction,those who don't know about it then you can search it on google or i'll recommend you to read ' The Secret' by Rhonda Byrne. Its kindle edition is also available. The secret...
Lets get motivated and feel happiness all around us. Just accept yourself as you are. Feel the Love, Feel the Happiness.