Meditate! Meditation is one of the most important things you can do to help yourself become more spiritually centered. There are many different ways to practice meditation, and it comes in different forms. The base behind any form of meditation, is to have some quiet time to focus on anything you'd like. You can do this in a formal or casual fashion. A great thing to try when meditating is to sit in a clean room that you feel comfortable in. Eliminate all distractions such as cell phones, television sets, music playing, and other people. Close your eyes, and try to focus your mind on the things that you believe, or attempt to clear your mind entirely. Simply sitting in quiet can be really helpful. If you do not have the time and ability to do this every day, at least take a few minutes to focus on what you believe. You can do this any time and in any setting, but make sure that you take the time to focus and reflect of what you believe.
Another great way to improve your own spirituality is to read about the spirituality of others. There are so many wonderful works of literature out there written by people of great faith. Most religions have scripture. Reading these sacred books is a wonderful way to study and come to understand you faith better. On top of scriptural works, there are many books written by people we can attempt to emulate. It's wonderful to read books written by these people. Another thing to remember is that even if these books are not written by people of your faith, they can still be incredibly beneficial to you. Keep your mind open to all sorts of new spirituality. Doing so can help you come to a better understanding of your own soul.
One way that helps improve your spirituality is to surround yourself with spiritual people. Not only are people with the attributes you desire good examples to you, but they also provide a great way for you to have conversations about the things that you believe in. If you are surrounded with people who are at peace, this will rub off on you. You will have the chance to discuss things that are important to you, and learn things from them. These become mutually beneficial friendships.
If you really have the desire to gain more spirituality in a religious sense, there are things that you can try to help make this side of you stronger. One thing to remember is that even if you don't feel that you're getting everything you want to be getting out of your religious practices, if it's truly something you believe in, continue going through the motions. If you believe in prayer, continue to pray. If you believe in reading scripture, do it even though you might not getting everything from it that you think you should be. Most likely, if you're really following the things that you believe to be true, they will gain meaning for you more and more over time.