It is nice to set long-term goals in life and being aware of your career related ambitions. But, it is too early to be serious about the preparation.
It should be commences seriously about 1-2 years before you decide to take plunge. As being involved in preparation for Civil Services Examination is a long process and by starting too early your enthusiasm may fizzle out in such a long period.
Till the, it is better to keep your eyes and mind open to the things around and newspaper reading is must to enhance your knowledge about contemporary development and in improving awareness level. This would be of great help when actually you commence serious preparation for Civil Services Examination.