Lion and shark 

Both of them are professional hunters but the lion cannot hunt in the sea and the shark cannot hunt on land. Not being able to hunt a lion in the sea cannot be said to be useless and not being able to hunt a shark in the forest cannot be said to be useless. Both of them deal with their confidence as they choose to embark on their play activities.

 If flowers have smell good than tomato that doesn't mean it can be used in cooking.  Don't compare one with the other. You have power of your own ability, find it and prepare yourself accordingly.  

Never look down to yourself, always have good hopes for yourself. Remember that broken color pen can also be able to fill in the colors. Get yourself used to better works before you reach the end.  The worst use of time is to waste it on comparing with one others. 

Cattle eat grass that makes them fat and fresh, while if the same grass can eat by the beasts, they can die because of it.  

Never compare yourself with others. Complete your race at your own pace. The method that lead someone else's success may not necessarily work for you. 

Keep an eye on God's gifts, blessings and the abilities, and refrain from envying the gifts God has given to others.