Written very well. However, these corrections and edits are for the finer points in translation. It will be a great opportunity to practise my Chinese as well :)

我如何散步 (How I Walk) by James LaLonde I would translate it as 我如何步行.  This is a more elegant way since you used the classical terms 如何.  More colloquially, 我怎样走路.  散步 is a "leisure stroll" which is a bit different in your English.

https://www.evernote.com/l/AEQTskXp1PdKooQ12ORh_1UH56hH49ZrYNs

I like to travel. And I travel a lot. 我喜欢旅行。我经常出去旅行。This is English style or influence.  A more natural Chinese would be, ~, 因此经常去旅遊.

Most of my travel until 10 years ago was mainly business travel with vacations tacked on here and there. 直到10年前，我的大多数旅行主要是商务旅行和在这里或那里的度假.  The 2nd part is very Anglicized Chinese.  Though understandable, very unnatural. Sometimes, due to cultural preferences, translation by meaning is superior than translation by structure.  This is not Bible translation where word for word translation is the preferred way and hence, reading a Chinese translation of it is as dull and convoluted as reading a legal document. ~ 大多数的路程是为了商务而度假的旅遊就如同书童陪伴, 東来西往.  Here I draw on the cultural reference of the old, the servant boy accompaning the scholar-master going here and there.

For many years of my life I averaged a plane trip every three days.  多年来，我平均每三天平均一次飞机程旅行旅行 implies a journey of leisure.  Here, your "trip" means journey.  In Chinese, personal pronouns are omitted when the context is clear.  Though not grammatically incorrect, very childish sounding and unnatural to adult ears.

I have probably spent half of my adult life in hotels. 我大概花了我成年生活一半的时间在酒店

大概我大半生的成年时间都花在酒店里.

If you are interested in my suggestions for finer points in translation etc, please let me know.  I don't want to be construed as someone showing off.  Hope to hear from you; else I would assume that you are not interested at all.

If you are going to do something a lot you might as well love it.

如果你会经常做某件事，那么你应该要喜欢它  This is technically a good translation but the English intent is missing.  It can be translated as "If you do something often, then you should love it".  The difference in tone is "should" vs "might as well".  I suggest, 事情既然经常要做, 为何不如喜之 Back translation becomes: Since this is the case of doing something often, why not become fond of it?  The Chinese prefers rhetoric questioning.

And I do. 我就是这样的  Good translation but you need to have the "I" for emphasis, even though the context is clear. I can pack a suitcase for a 2 week trip in 20 minutes. 在二十分鈡之內, 我可以收拾好两个礼拜的行/李/裝/ I guess you forgot this.

Traveling is something I am good at.我旅行是我喜欢也擅长的。= My travels are what I like and expert in.

旅遊是我精於的東西, Classical Chinese is even more concise, 旅遊, 我精於也.

However, about ten years ago I started traveling for pleasure. 不过大约十年前, 我对途行开始/变成/成为/为娱乐趣而旅行了。

Or staying a few days longer after business part of my trip was finished to see the sights and get a feel for the place. 每次旅行完成生意的部分之后，我都会多呆上几天，去游览名胜，感受那个地方

或者完成了商务之后, 我会待多一兩天, 欣賞 当地的风味.

This is a conscious decision I made at the time. 这是我当时做的一个刻意 为之的决定

I think it has to be, otherwise you will just travel for business and even though you may go to a lot of places you may never really experience them. 应/本/该如此，否则这将只是为了生意，虽然即使去过了很多地方，仍然不会体验到其风情你可能从来没有真正体验过这些地方。  [即使 is too elegant and classical for the rest of the modern and straight forward sentence. If you really would like to use it, then express something more poetic like this, 即使千山万河可渡, 亦难嘗到其景 Even though a thousand mountains passed, a myriad streams crossed, still the scenery has not been indulged]

我的行走 (How I Walk) by James LaLonde

https://www.evernote.com/l/AEQTskXp1PdKooQ12ORh_1UH56hH49ZrYNs

我喜欢旅行，我经常出去旅行。10年以前，我的多数旅行主要是商务旅行和各地的度假。多年来，我平均每三天飞一次。我大概花了我成人生活时间的一半住酒店。如果你会经常做某些事，那么你自然而然会喜欢它，我就是这样的，旅行是我的爱好也是我生活的一部分。

大约十年前我开始为乐趣而旅行，每次旅行先忙完生意上的业务，我都会再多呆上几天，去游览当地名胜，感受这个地方。这是我当时做的一个改变，本该如此，否则旅行于我将只是生意和工作，即使去了很多地方，可能也从来没有真正感受过这个地方。

2013年我又做了一些改变，开始每天散步，通常坚持每天行走10公里左右，差不多每天耗时一个半小时。由于天天如此，大部分散步的线路我都很熟悉，特别是我家和办公室之间的那段道路。由于住在北京，所以我不缺主题人物，在散步时，我坚持用手机拍摄很多照片，记录下生活的点点滴滴，我会拍下任何有趣的事物和风景。原来，最有趣的事物往往是各色风景，路人甲乙。

我发现除了每天散步以外，去外国或一些异域风情的地方旅行也很有行走的乐趣。事实上，这样的远行往往更有趣，

因为我经常出差，已经很熟悉目的地的线路，我真的只需要注重体验而不必担心方向，住宿，机票等繁杂事物。事实上我太痴迷于行走，以至于时间过去了，我还想走得更远，路在脚下，永不停留。 

不论天气如何，我几乎每天都走。我发现即使每天走相同的道路，但由于时间的不同，天气，季节的差异，街上的行人和路上的车的不同，没有一天是一模一样的。我从来不觉得走路无聊，事实上，我为此精力充沛。

无论是短行或跑长途，都需要提前计划做好攻略。你需要有一些松散的目标和时间框架（比如你想去的地方，要用的时间），你需要提前为每一天旅行做好计划。一旦准备得当，你所要做的只是走出大门执行计划。在行走的路上，我常有好的灵感，并且因此而解决了许多难题。在路上，大多数时候我只是看风景，而常常迸发出的灵感，使我很想写一本有关于中国24节气的书，记录我的行走生活。单纯的每日散步使我非常了解季节和周边的环境，它们真的丰富了我的生活，仅2013年我拍过的照片大约有2万多张。

如今这个习惯已变得根深蒂固，尽管我现在并不是每天都走，也不像之前照那么多的照片，我始终受益于这个新习惯，我发现每天自己会自然而然地走出去，呼吸新鲜空气。

在行走中，我所学到的宝贵经验是：你去哪里，做了什么或走了多远都不重要，重要的是你是旅行的态度，你充分地享受了那段时间和空间，乐在其中。对于读者，我更建议你用写作或者拍照的方式来记录你的行走，如果仅是嘴上说说，你是无法充分享受旅行。如果有这样的记录，每当你回来的时候，翻开册页，花时间反思行走中看到了什么，经历了什么，吃了什么，遇见了谁，以及学到了什么，是一件多么美好的事物。

正如亨利·戴维·梭罗（最好加一下这个人物的标注，普通中国人是不认识的）曾经写道，“重要的不是你在哪里或你旅行了多远——越远通常越糟糕——而是你有多么享受生活。”

祝你一切顺利，

朗龙杰

写的很好，让我好羡慕，改的还是多呢，如果真的要写书的话，可以作为一本书的前言，希望我的修改对你有所帮助，要是我的英文能有你的中文的一半好，该有多好啊。