When we are considering what it means to be spiritual, we have to think in terms of what not was taught to me but what is right or what and how I should feel about myself and others.  Going to church every Sunday, meditating and practicing yoga or other activity does not make you spiritual. Religion in itself is flawed as it is truly limiting to the individual seeking something more within than what they usually experience. Religion makes you only responsible to the organization or individual deity or deities that they have told you exist and whom you should worship. Spirituality does not do this, it teaches you to be responsible for yourself and take ownership of your actions, your cause and your effect. Religion wants you to think you face judgement for your wrong doings and therefor confessing, tithing and preaching what they religion wants you to do in the name of the religion. Spirituality does not but it does teach you that if you do wrong you can in fact reform yourself but you should choose the way you do it to gain inner peace with the conflict. Forgiveness comes from those who you have harmed to choose do so or not and also for yourself for the act. God, Universal Intelligence, Spirit do not judge, but you are told you will be if you enter whatever place the religion wants you to believe in. 

To be spiritual means being kind, loving, giving, thoughtful,joyful,peaceful,considerate, responsible and aware of the planet, each other,all living things and especially yourself. To practice the state and find and be your best self. To be judgement free but be in a state that you see the flaws but it may not be your job to fix them but that there is a solution, it just might not be seen right now. Over all it means to choose to be the best, whole and complete self you can be and not focus on ego or me but be selfless and focus on we. We do not live on this planet alone and yes to some religion means everything to them and that is great for them but it may not be great for you and if it makes you question more than find your peace, only you can find the best way and path to follow.  

Seek and you will find, knock and you will get an answer.

Blessings..