Saurabh 
What is Rahu ?
In Hindu Astrology Rahu represents materialism, mischief, fear, insatisfaction, obsession and confusion.
Rahu is found in the Puranic genre of mythology. The tale begins in the “remotest periods of prehistoric time, when the gods and asuras churned the Milk Ocean to extract from it the Amrita, the elixir of immortality.”
Rāhu was present at that time and overcome with pride. Mohini, the female avatar of Vishnu, started distributing Amrit to the Devtaas. However, one Danav, Svarbhanu, sat in the row of devtaas and drank the Amrit.
The Sun God and the Moon God noticed him and they informed Mohini; however, by that time Svarbhanu, had already became immortal. Vishnu as Mohini cut off Svarbhanu’s head with Sudarshan Chakra.
Rahuketu could not die but his head was separated from his body and his head came to be known as Rahu, while his body came to be known as Ketu.
Following this event, Rahu and Ketu were given the responsibility to influence the lives of the humans on Earth
What happens in Rahu Mahadasha ! 18 years of Roller Coaster 🔱
There is often unnecessary negativity associated with Rahu Mahadasha. Lets see how it affects one. The actual degree of effect will depend on the specific Kundli. Here we have specified generic effects.
An 18 year long period cannot be categorized , but there are few things that Rahu will make you do .
1. Materialism , The Maya ! Happiness = Money + Comforts + Success
🔆 You will become part of this rat race and chase material things. The thirst wont be quenched !
🔆 The Mirage that you are following will break sooner or later. Happiness = Money + Comforts + Success , This equation will rule your thought process !
Tip💡: Rahu driven Maya will make you materialistic to the point of being insane. Remember to not tie your goals only to money in this period!
2. Sudden unforeseen events , Good as well as bad ..
🔆 Sudden gains or loss will keep you on your toes
🔆 Unforeseen events will be the hallmark of this period.
Tip💡: Embrace the unplanned changes in life ! The more you will try and control your life, the more disappointment you will breed.
3.Highs & Lows of life
🔆 It is said that the rahu Mahadasha 18 year period makes the person undergo majority of dharma he is born for. He will see both highs and lows of life
Tip💡: Forget the status quo , Life will not be a straight line..
4. Relocation away from home. In some cases foreign !
🔆 Rahu is the significator of foreign lands.
🔆For a villager, a town might seem to be an alien land. The definition of “foreign” is a little hazy here.
Tip💡: Do not neglect your family, not matter where you move..
5.Confusion
🔆 A hazy mindset will keep you confused
🔆 There will be lot of overthinking and over-analysis
Tip💡: Keep calm and do not overdo the thinking part
6.Over Ambition
🔆 You will set unrealistic goals for you
🔆 You might neglect everything , including your family , to achieve these ambitions
Tip💡: Maintain a balance between your ambitions and happiness.
7.Addiction
🔆 You will be prone to some sort of addiction, not necessarily only toxic
Tip💡: Do not get hooked to things , people , stuff.
8. Big change in Lifestyle & Status
🔆 Life and Lifestyle will change a lot.
🔆 You will see both sides of life in this period
Tip💡: Do not risk it all.. Be cautious in things like stock market and gambling ..
9. Unending Desires
🔆 Desires wont end.
🔆 You will not be happy no matter how much you achieve.
🔆 Its a simple Math, If Desire is Money , Money is Number and Numbers do not end
Tip💡: Be practical, Expect feasible stuff
10. Wealth vs Health
🔆 Take care of your health
🔆 This rat race might give you success and fame , but at the cost of your health and personal life.
Tip💡: Health is wealth , Do not mess with your health. Specially during the last phase of Rahu-Mars !