What makes you unexpectedly excited and spontaneously explodes you with happiness? The things which have this effect in you are a good indicator of whether you are a Christian or whether you are fooling yourself (or pretending for the eyes of others).
If you never find yourself excited about a loved one making the right moral decision, or their growth in personal discipline and contemplation of godly matters, then you clearly don't consider these things important.
Are you more excited when the latest gadget is released? Or do your worldly concerns overpower and you want a pay rise to end your financial struggles more than you want to see your children learning to look to God for help?
Do you constantly seek God?
Yet, it is a journey of formation - your sanctification. If you find these things hard to get excited about, but you want to be excited about them, then ask God who gives all things to us through Jesus Christ our Lord.