Making a difference in someone else's life is a great way to start a new chapter in your life. If you see that there is someone who is not capable of helping themselves, take a minute to find out what you can do for them and do it. You will feel great about taking the time to help others less fortunate.
Don't fall into the trap of believing that you know everything there is to know about any subject. Remind yourself that you need to always be learning and growing to develop your spiritual, emotional, and physical self. Acknowledge that you really know little in this life, but that you can keep trying to learn every day.
Find a mentor. One of the most powerful forms of learning is by mirroring best practices of those who are already where you want to be. Find someone that you want to emulate and study their lives. If it is realistic to approach this person, reach out to them and ask them for some one-on-one time. If you do get personal time with your mentor, come in prepared with relevant questions you want to ask. Otherwise, you will just be wasting your time and theirs.