Many people go to Jesus seeking answers to their prayer, and when they get healed or their problems get resolved, some of them follow Him by joining churches, Bible studies and prayer meetings. This is good, because the miracles they have experienced have revealed to them who He is. But the biggest reason Jesus came was not to help us with our problems on earth but to save us from our sins (Mt.1:21), meaning not just to forgive us our sins but also to deliver us from our sinful ways and to transform us into the life of Christ (Jn.8:36). The hope is that those who get to know Jesus will learn more from Him and get to experience all of this salvation that He has come to give them.
But, sad to say, many think of Jesus only in terms of meeting their needs here on earth. When they hear about the life to come they seem to think only that Jesus has assured them a happy place in heaven. They don't know God's full salvation and so they are not pursuing after a life of victory over sin and becoming like Jesus in daily life. What many preachers proclaim is only a blessing on earth, and the 'abundant life' Jesus proclaimed (Jn.10:10) is taught as living 'the good life' on earth. When we look around we see different churches whose focus is only to proclaim healing, deliverance and provisions for the earthly life.
So we see people who have become 'believers' in Jesus continue to live in defeat – to anger, lust, worry, bitterness, unforgiving attitude towards others, love of money, jealousy, greed, covetousness, complaining, discontentment, justifying themselves, blaming others, etc. They continue in this way thinking that they can confess their sins and receive forgiveness! They have not even understood that Jesus came to give them much more – a truly abundant life.
Jesus said that if we habitually committed sin we were actually slaves under the power of sin (Jn.8:34). He has come to set us free (v.36).
If there is no such desire within us to be set free from the power of sin, the chances are that we are not really born again. One of the marks of those who are born again and have become children of God is that they have received a new heart from God and God's laws are being written into their heart and mind (Eze.36:26,27). If this is not so and all we look for is a 'good life' here, we are not born again and we have probably presumed on it.
In the case of those who came to Jesus for their earthly needs, once they get to know Jesus they need to go on to knowing Him in relation to every part of their life, yielding their whole life to Him and making Him their Saviour and Lord. Otherwise they will deceive themselves and miss out on what God has made ready for them.
For others who have come to know Jesus as their Saviour we need to see if we have drifted away from Him after getting drawn after the attractions of this world or getting occupied with the troubles of this earth. Backsliding is very easy. We too mustn't miss out on God's promises.