A Few points asked by @desidoga
I will try and answer these:
Here are my questions to myself and to all of you for deep thought:

1. Is the future completely fixed? Dridha? Or is it malleable?
2. How much sadhana is necessary to change the future?

3. Can all types of sadhana change the future?
4. How difficult is it to do that sort of sadhana?
5. What types of sadhana can change the future?
6. Can others change your future?

So: Let me try and answer these one by one using Shastra pramana and logic both.
In answer to Q1 asked by me:
The future is not completely destined.

However the percentage of population for whom above statement is 100% true is small.

Now, you will ask me:”Arre yeh toh aapka ego hai.
Why is it not possible for me if it’s possible for xyz to change his/her future using sadhana?”

Ans: What one sees is but a shortsighted snapshot of a person. Actually what the past lives karma is .. nobody knows..

This was my answer in tweet above:
“What one sees is but a shortsighted snapshot of a person. Actually what the past lives karma is .. nobody knows..”
But it is possible for few to know something of their/others past lives through certain sadhanas (not for Twitter/FB)..

Now for Q2:
How much sadhana?
Ans: Imagine a mountain of Karma. Imagine you standing there with a small digger tool which is your sadhana...
now imagine digging through that mountain?
That is effort required. (In general)...

The exception to my answer above is:
If you spent a huge number of years in past lives doing sadhana...then perhaps one is already through the mountain and a small hit with the hammer will go through to opposite side.
That’s why some achieve in days what takes lifetimes for most.

Q3: Can all types of sadhana change the future?
Ans: No. Some sadhanas especially of Devatas like Sri Krishna will take away everything from you.
Wife/husband/kids/property/izzat/paisa... Sab kucch.
Then you can become saint.
Hence decide what u want first.

4. How difficult is it to do that sort of sadhana?
Ans: In general, at the rate of 1000 japa per day, 4 months is the minimum for 1.25 lakh japa/ tenth homa:
Repeat 3 times: Takes 1 year:
Repeat entire process thrice: takes 3 years.
Thus sadhana will take years to accomplish..

Corollary to Q 4 above
“How difficult is it to do that sort of sadhana?”
Note that this 3 years for 9 lakhs japa is if all goes well. If it doesn’t and you keep failing on the 110th day.., trust me it can take more than 10 to 15 years!
Speaking from heart!

Now... in days of Tinder/Twitter/FB/Insta/Tiktok and where sex is the norm and nobody wants to wait and see what happens in 5-10 years
(saala... c*%#%*#% bolke bhagao jisne 3 saal sadhana bola pehle.. kaun yeh chu..... Pandit?... you understand?)
Duniya hai: Aaj chahiye bhai!

5. What types of sadhana can change the future?
Ans: So easiest sadhana to get vidya/wealth/marriage etc is Mahaganapati.

To relieve from sorrows and troubles, graha japa is best..

Sau marz ki ek dawa is Hanuman chalisa.

Check this thread for success in mantras and intelligence from Jyotish point of view:

https://twitter.com/mmpandit/status/1149621463827173376?s=21 https://twitter.com/mmpandit/status/1149621463827173376

One photo of a real person who exists in Pune with genuine clairvoyance.
Dattatreya siddhi: