Its not the clutch or the clutch spring at fault. You need to change your riding style. Sudden acceleration, sudden clutch release with high throttle input, riding the clutch, etc. are some reasons for excessive clutch wear. Also watch the oil you are using. Some oils are known to produce more clutch slippage in some bikes. I will not name them, but I have experienced this a lot of times on my bike. A clutch set should ideally last 15k kms minimum.

i know i abuse the clutch plates.... but when my father used to ride it earlier it lasted around 10k.... In my hand it lasts around 8k.... And apart from the clutch, my bike have serious engine and carburrater issues from day 1 of purchase.... Recently found even cdi(i dnt knw cdi or idi) to be faulty.... Btw i am using shell advanced mineral oil now...earlier was using sprinta semi synthetic but found it better..... Neways how will i make the clutch springs stiffer? Whats the exact procedure......

Geee! What a confusion there!!!!

This confusion was certainly caused by the early replies to your question that were (the way they were written) unclear about the engine torque.
IF your engine has substantially higher torque (after extensive modification, for example), you may need stronger springs, otherwise the clutch plates will slip when you open the throttle. Same as when your clutch is getting worn...but changing the springs then would be stupid since in this case the thing to do is to change the plates!
All what stronger springs do id to push the plates more firmly together, hence the slippage that would happen if they are too loosely against each other. NO -WAY does it change the performance of the transmission, NO-WAY will it change anything in your engine, the mileage, etc...

Adverse effects, besides that, can be unpleasant. The first one is that you will have to compress stronger springs when de-clutch, needing more effort from your hand. On a big bike, which cannot do without very strong springs (and large clutch friction area), this is soon very tiring in city!
Another one is that you will often (not necessarily) have a less progressive clutch. The inverse of what we like!
The possibility to have an insufficiently strong cable has already been mentioned!

So: if you don't NEED it: don't do it!

well thats quite a good reply... Actually i just want to try out the experiment....thats why i want to do it..... And its good to know the adverse effects. And if i dont like the clutch feel, i can anytime revert back to stock. Just wana try it out once..... And do you know how to do it? Heard that putting a washer inside the springs will do the job. Any idea?

Take the springs inside your clutch and look for slightly longer/stiffer springs in the market.

do i have to tamper the clutch plates by any mean? Only the springs will do na? What about putting two washers inside to stock springs? Will that do? That will make the springs stiff

It does not tamper clutch plates..

will putting washer inside the springs do?

asked my mechanic aobut these stiffer clutch springs

he opened the clutch box
and the spring
and he added a coil of spring from another spring

he just added one loop of the other speing n placed it along with the spring ,

the initial response is quite good

well thanx a lot buddy..... which bike you have?

mine is HONDA DIO
NON geared

you have guts for doing this in a non geared engine....lolz... Anyways how does it feel now?

guts ?
i dont mind experimenting anything on my bike
.
the bike feels good at lower rpm
didnt take it for a higher rpm still
due to running period of the new big bore setup