If there is one thing that I could recommend to everyone I meet, it would be this book. The Power of Now: A Guide to Spiritual Enlightenment is an eye-opening, life-changing book. I read excerpts from this every day just to re-align myself and get me in the right mindset. Eckhart Tolle explains how we live our lives letting our thoughts control us, and the importance of living in the now, and not the past or future.
Buy the book here
*Please note the above link is an affiliate link, meaning if you purchase, I will make a small profit at no extra cost to you. I only ever recommend products I have used myself and truly love.