Faizal,
This is definietly not enough for us, to give you a help.
In general we can say that there should be a critical path from the start to the end. (This can change if you have defferent calendars, limited resources, constraints, etc)
The critical path is called critical because the activities on this path define the project duration. So the existance of critical activities is a must (apart from some exceptions) and it doesn"t mean that there is a catastrophe, because you hace critical activities.
Anyway if you want to get rid from your critical activities, set a milestone beyond to your project end. If your deadline allows you can do it.
But as it was told software is a tool, you have to use it with care, and not for hocus-pocus.
Regards
Miklós