The only way to excel as a Christian is to 'practice'.
>>> Practice studying the Word of God (the Bible) at least several times weekly. Pray beforehand and ask for God to guide your fingers to the appropriate scripture for the day.
>>> Practice focusing on and rejoicing (opening your mouth and praising God) for what He has done in your life, both the successes and the circumstances that did not work out the way you desired or expected them to.
>>> Practice praying throughout each day. Some prayers will be open and some may be private, nonetheless, talk to God throughout each day. When you are dedicated and sincere, He will talk back!! Do not pray and worry - it is purposeless. Only have faith in God's unlimited power and His promises - it is priceless!
>>>Practice quoting the promises of God regularly, something as simple as "All God's promises are Yes and Amen" or, "For every one who asks receives; the one who seeks finds; and to the one who knocks, the door will be opened" or, "O Lord, my God, in You I put my trust: save me from all them that persecute me and deliver me."
>>> Practice attending church services (and/or Bible Study night) on a regular basis. For example, at least 3 out of 4 Sundays per month, and take your children with you if you are a parent. This way you will continue to get stronger in your comprehension of the Word of God, and you can hear a special word for your life, your situation on a regular basis. Additionally, there is true joy in the house of the Lord, if you are attending a Holy Bible-based church. Ask the Lord Christ Jesus to guide you to the right church and He will. Stay away from baseless excuses why you cannot attend church.
>>> Practice staying as hungry as you were your first day, first week as a Christian!! It is too easy to give up. It is diligence and faithfulness God rewards.